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My Stepmother Is an Alien synopsis

Trying to rescue her home planet from destruction, a gorgeous extraterrestrial named Celeste (Kim Basinger) arrives on Earth and begins her scientific research. She woos quirky scientist Dr. Steve Mills (Dan Aykroyd), a widower with a young daughter (Alyson Hannigan). Before long, Celeste finds herself in love with Steve and her new life on Earth, where she experiences true intimacy for the first time. But when she loses sight of her mission, she begins to question where she belongs.

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