Transformers: Animated: Season 1
The war for supremacy rages on in the city of Detroit -- the Transformers' new battleground. Led by Optimus Prime, the Autobots protect the powerful Allspark, an artifact that provides the source of life for all Transformers. The enemy Decepticons will destroy everything that stands in their way of the device and control of the planet. The Autobots' secret weapon is Sari, an 8-year-old girl who holds the key to their survival.