Miko and Bulkhead go up against Starscream and Breakdown as they go to Greece to retrieve an Energon Harvester.

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

Megatron controls Bumblebee from inside his mind and influences his behavior at HQ.

MECH agents capture a Decepticon, and the Autobots mount a rescue.

The Autobots try to claim a magnetic weapon before the Decepticons get to it.

Bulkhead acquires a top-secret formula, and the Decepticons come after him for it.

Ratchet becomes a threat to everyone after he injects himself with an experimental substance.

The Autobots go to the Earth's core to fight for the planet; and Jack uncovers info about Optimus' background.

Jack learns how to restore Optimus' memory.

Bumblebee discovers that MECH and Starscream are responsible for his troubles; Ratchet confronts demons from his Cybertronian past.

Megatron sends Dreadwing, Airachnid and Breakdown to investigate the trail of a potential Energon source, but what Airachnid doesn't know is that Dreadwing and Breakdown have actually been ordered to kill her for her treachery. She eventually catches wind of this, however, killing Breakdown and running off into the woods. Upon arriving at an abandoned Energon mine, Airachnid encounters Starscream cowering from a large Insecticon. After using her abilities to control the creature, she contacts Megatron and tells him to come to the mine, planning to use the Insecticon to kill him so she can claim Decepticon leadership...