An alien must pose as a human to save his dying planet, but a woman and greed of other men create complications.
Thomas Jerome Newton is a humanoid alien who comes to Earth to get water for his dying planet. He starts a high technology company to get the billions of dollars he needs to build a return spacecraft, and meets Mary-Lou, a girl who falls in love with him. He does not count on the greed and ruthlessness of business here on Earth, however.