It Came from Outer Space tells the story of an amateur astronomer and his fiancée who are stargazing in the desert when a large fiery object crashes to Earth. At the crash site, he discovers a round alien spaceship just before it is completely buried by a landslide. When he tells the local sheriff and newspaper editor what he saw, he is branded a crackpot. Before long, odd things begin to happen, and the disbelief turns hostile.