The Autobots go on alert as the Decepticons return to Earth in the series opener, Meanwhile a group of humans find themselves with new caretakers after stumbling into the middle of the Autobot conflict with the Decepticons.

Jack tries to be impressive, with Bumblebee's help, but Knockout's arrivals sends things out of control.

Megatron manipulates the impaired Optimus into joining the Decepticons.