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.

The Autobots go in search of Cliffjumper, whose life signal is weak and find Megatron wielding the dangerous dark Energon.

Bulkhead is unknowingly shadowed by Miko as he goes to rescue Agent Fowler, who was kidnapped by the Decepticons.

The Autobots try to stave off an attack from Megatron's Terrorcons to protect their human wards.

The Decepticons and the Terrorcons go into battle against the Autobots.