Divide and Conquer

The Autobots prevent the Decepticons from harming a weapons factory, but at a heavy price: Optimus himself. His life is on the line, but Wheeljack knows exactly how to save him before it's too late. Problem is, the required part is back on Cybertron in his old laboratory. Bumblebee, Trailbreaker, Ironhide, Bluesteak, and Chip Chase leave to save Optimus. Without Optimus Prime in command, the Autobots are left vulnerable as Megatron hatches a plan to destroy the team on Cybertron.