Transformers animated : the battle begins. Optimus Prime vs. Megatron

Optimus Prime and Megatron meet and battle for the first time in the awesome new Transformer Animated series. Optimus Prime and his crew of Autobots dream of being heroes, but the battle against the Decepticons ended ages ago, leaving glory in short supply -- until the Allspark appears with the dreaded Megatron in hot pursuit. The fierce battle send Megatron, Optimus Prime and the other Autobots crashing to the surface of a strange, new world--Earth. Here, in the city, the battle for the Allspark continues, with the Autobots meeting their new friend Sari, her father and a whole new set of enemies both robot and human.