Planet Sheen is the intergalactic tale of Sheen Guevera Estevez, the hyperactive, attention span-challenged kid from Nickelodeon's hit movie and animation series Jimmy Neutron who finds himself on a planet a million light-years from Earth. The story follows Sheen as he deals with Zeenu's bizarre customs and strange-looking creatures including a jealous villain, Dorkus, a 10-foot tall, 2-headed princess with a crush on him, and a NASA-trained, talking chimp, Nesmith, who joins Sheen in his ultimate quest to return home.