Megatron has not only successfully conquered Earth, but Decepticon teams throughout the Galaxy have finally defeated the Autobot resistance.
On Cybertron, a petulant Ironhide is arguing with Prowl over there being a traitor in their midst, and even winds up punching his superior. Though Jazz calms the situation down he and Prowl know that without more Energon Optimus will soon die and that will be the end for them all.
In the deserted City Wheeljack and Bumblebee are searching for new Energon sources, but with no luck. They soon realise they are being watched, and use Wheeljack's new distress signal to get around the communication interference on the planet to call for help. Back at their base Ironhide and Cliffjumper set out, leaving a reluctant Sunstreaker behind to keep an eye on the Autobot he believes betrayed them.
Within their new hiding home on Earth the late Andy's group of survivors are falling apart without leadership. Sarah confront Bridge and makes him realise he needs to assume the leadership role.
On Cybertron Ironhide and Cliffjumper take down the watching observer, only to find it's Hot Rod. He and some others were shot down over Cybertron some time ago and have been awaiting rescue, he's so glad someone has received their distress call and come looking for them...