In the present day, Drago and Druddigon were doing a quick sparring lesson, much to Sentinel Prime's ire. 

Sentinel Prime: "Keep it down! What's a Prime gotta do to get some peace and quiet around here?!"

But when the Autobots receive a distress signal from a native planet called Nebulos, they find that Draconians are terrorizing the place. So, they have to help them. Meanwhile, Soundwave is after the Autobots and an unknown enemy is here to ruin it. So, he informs Shockwave, but he's busy wondering about who is targeting the Autobots. Soundwave also tries asking Galvatron to find the unknown enemy, and he accepts.

Soundwave: "Soundwave acknowledges. Decepticons, mobilize!"