Jalan Cerita:
When Earth astronaut Capt. Chuck Baker arrives on Planet 51 -- a world reminiscent of American suburbia circa 1950 -- he tries to avoid capture, recover his spaceship and make it home safely, all with the help of an empathetic little green being.

Pemain:

Dwayne Johnson (suara) Capt. Charles 'Chuck' Baker

Seann William Scott (suara) Skiff

Jessica Biel (suara) Neera

Justin Long (suara) Lem / Rover

Gary Oldman (suara) General Grawl