Planet 51 is a 2009 animated science fiction film produced by Ilion Animation Studios. The story follows an alien named Lem who discovers a human astronaut, Chuck Baker, has landed on his home planet. The film explores themes of friendship, fear of the unknown, and the importance of understanding different cultures. Set in a vibrant, retro-inspired world, Planet 51 features a variety of colorful characters and landscapes. The film combines humor and adventure as Lem and his friends work together to help Chuck return to his spaceship while avoiding the local authorities who fear the human.