A new trailer of Planet 51 has been released by Sega. Planet 51 the video game is a title based upon the forthcoming Movie of the same name which follows a human astronaut named Chuck (Dwayne Johnson/The Rock) who lands on Planet 51 thinking he's the first to set foot on it. However, he discovers it's inhabited by little green people who live in a white picket-fenced world reminiscent of 1950's America.