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

Scraplets invade HQ while Optimus and Arcee patrol the Arctic, leaving Bumblee and Ratchet to repel the enemy.

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

A Decepticon plague infects Optimus Prime, so Arcee and Bumblebee sneak onto the Nemesis to find the cure.

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

Two patrolling Autobots end up trapped in a cave with their enemies, Starscream and Megatron.

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

The Autobots acquire a surprising ally in their battle to save Earth.

Bumblebee questions his worthiness to his team after he is compromised.

Megatron goes on a conquest to reveal the rest of the relics while Arcee and Bumblebee race him to New York City before Megatron gets there.

While Optimus struggles to survive after Megatron’s destruction of the Autobot base, the separated members of Team Prime try to reconnect.

The Decepticons launch a new scheme to clone an army of beasts.

Megatron doubts Predacon and its allegiance after Predacon reveals a secret of its own.

The Autobots face the Decepticons for a final showdown.