"Get on with it, Pirates. That squid ink's going to wear off soon," Zelena said.

"Killian, please," Killian walked to her, "What are you doing?" Emma asked.

"You took our memories, Swan. You tried to stop us from knowing the truth and now I'm going to return the favour... That is..." Killian looked at Calista, "If you don't mind I get this fun, sister," Killian said.

"Go for it, I quite fancy watching this," Calista said with a smirk.

Zelena laughed and looked at Emma, "By the look on your face, it would appear someone needs restraining," Zelena put the magic blocking cuff on Emma's wrist, "There. No more magic for you," Zelena turned to the Jones siblings, "Now, I assume, given my helpfulness, you'll allow me to go about my business undeterred," Zelena said.

"As long as you don't get in our way, we won't get in yours," Killian said.

"Agreed," Calista said.

"Ah. I think this new you. Tell me, how does it feel to be a Dark One?" Zelena asked.

"It feels like..." Calista said and they looked at each before looking at Zelena.

"Like we've been reborn," The Jones siblings said together.

Flashback: Camelot - Three Weeks Ago...

Killian and Calista found themselves in a dark room when suddenly they were both engulfed by the darkness and they both screamed.

The darkness made them both relive their worst memories.

Killian remembered being a child and losing his sister for the first time, being on the Jolly Roger watching Milah's heart being crushed, Rumpelstiltskin cutting off his hand. Gold taking his heart while he was bound to the gate of the mansion, unable to save Emma then when Gold began to crush Killian's heart in order to use the sorcerer's hat in the clock tower.

Calista remembered being a child and being placed in a stranger's arms and her father walking away from her. Being abused for the first time and then almost drowning in Neverland. Being trapped in Pan's camp and being taken by Rumpelstiltskin. Naomi being kidnapped by Killian and Killian ordering for their deaths on the Jolly Roger. Mr Gold choosing Lacey, choosing power. Mr Gold trying to crush Killian's heart to separate himself from the dagger.

Killian and Calista then emerged from the vault dressed in cloaks in their new Dark One's glory.

Someone was waiting for them when they got out, their visions were blurry and when they focused they saw the Darkness, representing Rumpelstiltskin.

The Darkness waved, "Hi," The Darkness said.

Killian and Calista removed their hoods looking at him, "Bloody Crocodile," Killian said.

"Rumpel?" Calista questioned.

"Not exactly to either, but I understand the confusion," The Darkness said.

Killian yelled as he charged towards the Darkness but he just went through him and Calista watched silently.

"That's not gonna work. I'm not out here," The Darkness appeared beside Calista, "I'm in there," He tapped Calista's head, "And in yours," The Darkness looked at Killian, "I'm your guide... The voice in your head," The Darkness said.

"Bloody hell..." Calista said.

"Save your speech. I know who you are. All the Dark Ones in our heads. But it doesn't matter we won't listen to you," Killian said.

"What if I told you that together, I could get you the one thing you've both wanted for hundreds of years? Your revenge," Killian looked at him the Darkness giggled, "That's right. I saw what you saw, dearies. I saw your pain and I can ease it. Stick with me and you will finally do what you never could before," The Darkness said.

"And what's that?" Killian asked.

"Why, kill me, of course," The Darkness said.

"I don't want to kill Rumpel," Calista said.

"Yes, you do dearie... He tried to kill your brother more than once, no matter how many times your brother tried for you, your husband never could. He tried to take you from your daughter, abandon her like he did his son, like your father left your in the hands of that abuser and how your father abandoned your brothers... Your husband is exactly like your father and that, my dear, is why you will always want to kill your husband," The Darkness said.

End of Flashback

Everyone walked into Emma's house and couldn't see her, "Emma!" Regina called out.

"I'll check the basement," David said.

"I'll get upstairs," Regina said.

"Emma! Emma!" Mary Margaret called out.

Naomi saw Emma lying down on the couch, "Emma," Naomi and Mary Margaret walked over to her to see her with the magic blocking cuff on, "Hey, what happened?" Naomi asked her.

A few minutes later, everyone regrouped in the living and they got told what happened by Emma.

"You turned Hook and Cali into Dark Ones?" Will asked.

"It was the only way to save them," Emma said.

"And you didn't think of the consequences to everyone else?" Regina asked.

"I couldn't just let them die," Emma said.

"No! You couldn't let Uncle Killian die. You didn't do this for my mum or my uncle you did it for yourself!" Naomi said.

"No. I did it for them," Emma said.

"Bloody hell," Will said.

Emma looked at Regina, "Surely you can understand," Emma said.

"Well, yes, but..." Regina sighed, "Now we have bigger problems," Regina said.

"I know. I didn't think any of this would happen. I was trying to get rid of the darkness for me. You can't tell me after all Zelena's done to you, your life wouldn't be easier if she were gone. I was doing you a favour," Emma said.

"Come on. This is premeditated murder, Emma. There had to be another way. You should've come to us," Mary Margaret said.

"And risk losing someone else? I thought the best way to control the darkness was to isolate myself. But when I did that, there was no one around to give me hope or tell me when I was being stupid!" Emma said.

"Fine. You're being stupid. So stop it. Right now, we have to clean up this mess," Regina said.

"My dad..." Naomi backed away, "I...I need to go..." Naomi said.

"Why?" Regina asked.

"As much as my mum says she'll forgive him for everything, now she's a Dark One... She'll join Uncle Killian with killing him," Naomi said.

"Go, we'll sort this," Regina said.

"Thank you," Naomi said and disappeared in smoke.

Naomi appeared beside her father in the pawnshop and Killian stood in front of them in the shop. 

Killian looked up and smirked when he saw them both together.

"So, it's true... Emma turned you into a Dark One?" Naomi said.

"And now you've come for your revenge," Mr Gold said.

"The thought had crossed our minds," Calista appeared sat on a glass cabinet in a black dress to her mid-thighs and her husband and daughter looked at her, "Brother, how should we make the Crocodile pay?" Calista asked.

"No...Calista..." Mr Gold said.

"You'll let me decide the fate of your husband? I'm honoured, sister," Killian turned to Mr Gold and pointed to his hook, "For this lovely piece of hardware, I think I'll take your hand. For trying to separate Cali from her daughter, your other hand. For Milah, your heart. For trying to fill Emma with the darkness... Hmm, I think your head will do quite nicely," Killian said.

"I like those ideas," Calista said.

"So, what are you both waiting for? Get on with it," Mr Gold said.

"Oh, no, no, no, no, no, no," Calista appeared in front of him and she stroked his check slowly looking at him, "He's been waiting centuries for this moment and you, my darling," She lightly wrapped her hand around his neck as he looked at her in fear, "Don't get to call the shots, not anymore," Calista said.

"Cali... Please, fight it," Mr Gold begged.

"I'm tired of being told what to you by you," Calista said.

"She's right you know, I've been waiting for this moment and I really want to..." Killian breathed deeply, "Saviour it, Cali... Don't scare the coward to death, where's my fun if you do that?" Killian asked.

"Forgive me, brother," Calista said and backed away from Mr Gold and Naomi, to her brother.

"Forgiven... Oh, and we mean it," Killian took a sword off a shelf and slid it across the floor to Mr Gold and took a stance, mocking Rumpelstiltskin, "Get your affairs in order, dearie, for we duel at noon on my ship," Killian said.

"Your ship?" Calista asked.

Killian glanced at her, "Slip of the tongue, our ship," He looked at Mr Gold, "Where it all began," Killian said.

"How poetic. But we both know this weapon cannot kill either of you," Mr Gold said.

"Ah, true. That sword can't kill me. But this one..." Killian made Excalibur appear in his hand, "Can," Killian said.

"Excalibur," Mr Gold said.

"You have it," Naomi said.

"Aye. Well, now that it's whole, it can no longer control us. But it can..." He playfully pointed it at Mr Gold, "Oh, oh, oh!... Kill us. All you have to do is take it from me. So, what say you, Crocodile? Shall we finish what we started?" Killian said.

"Indeed," Mr Gold said.

"Shall we tell him the twist or leave it for a surprise?" Calista asked.

"Tell him, let's see what the Crocodile will do when he knows the truth," Killian said.

"Know what?" Mr Gold asked.

"You kill Killian, you kill me," Mr Gold and Naomi looked at her shocked, "A little present from Zelena back in Camelot, our lives are now linked... So, my darling, can you kill him knowing you will kill me too?" Calista said and waved her hand, making the two of them disappear in black smoke.

Later at Regina's house, Mr Gold and Naomi went over and told the others about their encounter with Killian and Calista.

"Once pirates, always pirates," Regina said.

"As a man, Hook spent centuries trying to kill me and as a woman, Cali spent centuries helping him and after I did as a Dark One to Cali. It makes sense that revenge would be on their minds," Mr Gold said.

"Why wipe my memory if they were going to announce their plan anyway? There must be more to it," Emma said.

"Yeah, well, even if here is, we only have until noon to stop them. And to save you," Naomi said as she grabbed her father's hand.

"What about Merlin's message?" David asked.

"What message?" Naomi asked.

"He said this Nimue is the key to stopping the Dark One," Mary Margaret said.

"Nimue was Merlin's true love," Emma said.

"And she was also the first Dark One," Mr Gold said.

"I know. How do we find out more about her?" Emma asked.

"Start your search with the Dark One chronicles. There are many texts that can help us," Mr Gold said.

"As much as I appreciate devotion to scholarship, there is an easier way," Emma walked to Mr Gold, "I am still a Dark One. I can protect you. All you have to do is removed the cuff," Emma held up the wrist and Mr Gold and Naomi chuckled, "You don't trust me," Emma said and looked at Mary Margaret, David and Regina in turn.

"Well, if the situations were reversed, would you trust me?" Mr Gold asked.

"And, he doesn't need your protection," Regina pointed to Naomi, "She's just as good... No matter how dark the other two are, they'd never hurt her, just like Gold couldn't hurt her or Neal," Regina said.

"So, it's true. You are here," Henry said as he walked in and stood beside Naomi.

"Henry. I need you to tell them it's okay to take off this cuff. It's the only way to figure it all out," Emma said as she stood in front of him.

"No," Henry said.

"What?" Emma said.

"You lied to us... About Hook, about Cali, about everything. Why should we trust you now?" Henry asked.

"Henry, I'm your mother," Emma said.

"Are you? Because the mom I knew wouldn't keep things from me," Henry said.

"I thought you were the one person who would understand," Emma said.

"I thought you were the one person I trust," Henry said.

"So, you can forgive Regina and Gold for everything they've done, but not me?" Emma said.

"They've changed. They showed me they changed," Henry said.

"I changed too," Emma said.

"When we first met, yeah. But the minute things got tough, you didn't come to anybody. You decided that you would figure it out on your own. We were a team," Henry said.

"Operation Cobra, I remember," Henry said.

"But now you just want your magic back so you can do it alone. And I've seen what you do with dark magic," Henry said as he ran upstairs. 

"He needs time, Emma," Regina said.

"We should really get to the library, Auntie Belle's already looking for something to unlink them," Naomi said.

"Unlink them?" Will asked.

"Oh, didn't she tell you that bit?" Naomi looked at Emma then Regina, "Your deranged sister had linked my mother's life to my uncle's life, if he dies, she dies and if she dies he dies," Naomi said.

"Bloody hell..." Will said.

"We've got a lot of work to do," Naomi said.

"I have a stop to make first. I'll meet you there," Regina said.

"Let me guess... I'm not invited," Emma said.

"Emma we love you," Mary Margaret said.

"You don't trust me," Emma said.

"We don't trust the darkness. Stay here and let us save you. It's for the best," David said.

Flashback: Camelot - Three Weeks Ago...

Killian and Calista were walking through the woods and they stumbled over their cloaks.

"Ugh... I hate this," Calista said.

"What the devil are we wearing? Why must Dark Ones dress like monks?" Killian said.

Killian was engulfed by red smoke and his attired changed back to his black pirate attire. Calista was engulfed in black smoke and she wore her black silk dress, ending at her mid-thighs.

"Yes, much better. I went with leather as well," The Darkness said.

"I like it how you get complimented," Calista said.

"Yes, yes, you look very pretty too," The Darkness said rolling its eyes.

"Get out of here," Killian said to the Darkness and they continued walking.

"Try to ignore me, bet you can't," The Darkness said.

"Talk all you want, spirit. I know you're lying. There's no way that I can get my revenge when Gold's in Storybrooke and I'm trapped here in Camelot," Killian said.

"Well, that's where we come in, dearies. Might I suggest a Dark Curse?" The Darkness suggested.

"And crush the heart of the one we love most to enact it? No, no, no, I won't kill Emma," Killian said.

"And I won't kill Naomi," Calista said.

"Yeah, but there's always a loophole," The Darkness said.

Emma came running up to them, "Killian! Calista! It worked! You're both alive!" Emma said.

"Aye, it did," Calista said and rolled her eyes.

"After spending centuries quelling our bloodlust, you threw us right back into that darkness! Job well-done, Emma!" Killian yelled.

"Binding you both to Excalibur was the only way to save you both," Emma said.

"Right, Excalibur. And where is our shiny new tether?" Calista asked.

"I don't know... It disappeared right after you both did," Emma said.

"Ah, isn't that convenient?" The Darkness said.

"How long has he been with you?" Emma asked as she glared at the darkness.

"You can still see him?" Killian asked.

"Sadly, yes. I mean, she's still a Dark One. No matter how ineffectual she may be," The Darkness said.

"Don't listen to him. He's not real. But I am. I'm right here. Look at me," Emma made Killian look at her, "We can still have a future together. The house in Storybrooke. I want it. With you. It's ours. I want to be with you. You just have to want it, too," Emma said.

Calista rolled her eyes and started walking away through the forest.

"Tell me, dearie, tell me who you hate the most," The Darkness said.

"I don't hate anyone," Calista said.

"Now, now, now, don't lie to me, you never could," The Darkness said.

"You don't control me, demon," Calista said.

"Who is it? Who do you hate? Who do you want to kill? Tell me. Let me in. I can help you. I can help you let the anger out. I can make you stronger, in a way your family never could," The Darkness said.

"Shut up," Calista said.

"You need to want it," The Darkness said.

"Shut up!" Calista yelled and three magic at the Darkness but it went through it, to a tree.

"Bloody hell!" Will said as he jumped out of the way.

"Will? I...I'm sorry..." Calista said and backed away.

"It's okay," Will stood up and approached her cautiously, "It's just me, it's just me... We went to the vault but you weren't there... And Naomi sent me to you... She thought I could help you more than she," Will said.

"Y...You need to go... I could hurt you," Calista said.

"I know you could but you won't," Will brought her into a hug, "Put your faith in me, let me help you," Will said.

Calista slowly hugged back and closed her eyes, "I don't want to be like him... I can't," Calista said.

"And you won't," Will said.

Calista opened her eyes and looked around seeing the Darkness has gone, "He's gone..." Calista said.

"Seeing someone like Emma was?" Will asked and Calista nodded, "I'm here, I'll help you."

End of Flashback

Outside Regina's house and Naomi looked at her father who stopped walking.

"Papa? What's wrong? Aren't you coming?" Naomi asked.

"I'm afraid my preparations for this battle can't be found in a book," Mr Gold said.

"Well, but this was your idea," Naomi said.

"For you and the others, there might be some way to protect yourself. For me... I've spent an entire life running away from battles. Time to stop," Mr Gold said.

"Papa. You don't have anything to prove anymore. You saved mum from Merida, you're a hero now," Naomi said.

"Yes, I did, but that doesn't erase a lifetime of cowardice... Nothing can. Noami... I know I've done some unspeakable things and I've hurt you in unforgivable ways. But I also know that not wanting me to die isn't the same as wanting to see me as a father," Naomi looked down unable to deny it, "So, if I survive this and your mother is fine. I want to do better by you both," Naomi looked at him, "I want to love your mother in a way I never could before, I want to be the father you deserve. With honesty and courage. Let me be the father and husband you both deserve. The man I sword on your brother's grave that I would be," Mr Gold said.

"I...I don't know what to say, Papa," Naomi said.

"Don't say, anything sweetheart. If I win and your mother's alive... I'll take her to the well where we were married... And if you meet us there, I'll know you'll want me to be the father you deserve," Mr Gold said and walked away.