Fan Casting Scooby-Doo! Meets The Transformers 3: Age Of Unicron

A New Threat That Is So Big, And So Powerful That Can Consumes Planets. His Name Is Unicron. He Transforms Megatron Into Galvatron And Creates A New Empire Of Decepticons. He Commands Galvatron To Bring Optimus Prime And Make Him His Henchman, So He Can Find 3 Keys To Open A Space Bridge To Release Unicron, So He Can Consume Every Planet In The Solar System. Including Earth. Meanwhile With The Mystery Gang Wrapping Up Their Mystery, The Police Arrested The Criminal And Take Him To Jail. The Gang Went Back To Headquarters To Celebrate