Transform and Roll Out! Part1

A small repair crew, consisting of team leader Optimus Prime, hotshot Bumblebee, lumbering Bulkhead, ninja loner Prowl, and grumpy Cybertronian War veteran and medic Ratchet, find the Allspark among meteors when clearing a space bridge in an asteroid field. The crew is attacked by Decepticons including Megatron and Starscream, and are refused assistance from Cybertron. Starscream betrays Megatron; an explosion damages Megatron and he crashes on Earth along with the Autobot ship.