Forced by fate into a role he never wished for himself, OPTIMUS PRIMAL led a rag-tag group of scientists and warriors in a desperate battle against a hardened gang of madmen and killers led by the PREDACON criminal MEGATRON. Trapped and alone, the MAXIMAL leader fought to defend the primitive world on which they had crashed, and to prevent the insane machinations of a villain that would eventually become the most dangerous enemy ever to blight the history of CYBERTRON.