This was a GREAT movie!  The animation is fantastic, it's aesthetically pleasing.  The story line is adorable!  The movie takes place on a different planet in the 1950's.  An astronaut lands on the planet and they all think he is the alien and wants to eat their brains.  Thus, they try to catch him so they can study him.  He makes friends with a few "people" on the planet and they protect him.  It was just adorable.  I don't remember anything in the movie that upset me since I am VERY over-protective of my daughter.  I would go see this again, it may be one we buy upon release.