While searching for clues to their missing memories, Blackarachnia and Rattrap encounter Jetstorm, Thrust, and Tankor -- three deadly new Vehicon generals created by Megatron.

Cheetor leads a dangerous mission to bring out Tankor's old Maximal personality. In doing so, Rattrap discovers a major clue to the Maximals' missing memories.

Tankor uncovers an ancient weapon with the power to turn organic material into cybernetic metal. Nightscream gets hit by the weapon, and the Maximals race against time to save him from going offline.

The Maximals attempt to infiltrate Megatron's former fortress, only to have their mission threatened by their supposed new ally!