A picture of the Transformers Animated, including Bumblebee, Ratchet, Optimus Prime, Bulkhead and Prowl.

In Transformers Animated, the adventure begins when Optimus Prime and his small crew of Autobots come into possession of the Allspark, a powerful Cybertronian artifact that attracts the attention of their long-forgotten enemies, the Decepticons, and sends them crashing to a strange and distant planet known as Earth.