Megatron reprograms Professor Sumdac's animatronic dinosaurs, turning them into Dinobots.

Ratchet's old enemy, the bounty hunter Lockdown, resurfaces.

Bulkhead is suspicious of the musical robot player Sari receives as a birthday gift.

A disgruntled former employee tries to use an Autobot to destroy the city in a bid for revenge.

Prowl, Bumblebee, and Sari investigate a Cybertronian energy signal detected by Optimus Prime.

The Autobots must rally to prevent the AllSpark from falling into the clutches of the Decepticons.

Optimus teams up with Sentinel Prime in order to defeat the Headmaster.

The AllSpark creates a new Autobot out of pieces of garbage.

When the AllSpark turns construction vehicles into Autobots, Bulkhead becomes fast friends. However, the Decepticons have other plans in mind.

While chasing an Autobot traitor, Bumblebee thinks back on the time he spent with Bulkhead in the Autobot Boot Camp.