The plot is as follows, this is the forth season of beast wars. The beast wars are over and the remaining maximals return to there home of cybertron. But the bad guy, Megatron also gets there and destroys everything in cybertron that is organic. The maximals return and find that they have new powers and new bodies, which help them fight the everlasting battle against Megatron. Megatron now leads the evil Vehicons, and Optimus still leads the Maximals.