A comedy of cosmic proportions, 'My Stepmother Is An Alien' is the story of dedicated scientist Steve Mills (Dan Aykroyd) who discovers extra-terrestrial life in the sensuous form of Celeste (Kim Basinger) - a girl literally out of this world! The two have much to learn from each other. For Dr Mills it's the untapped knowledge and secrets of another planet. For Celeste, it's discovering what kissing's all about. A match made in the heavens, the only shadow is cast by Jessie (Alyson Hannigan), Dr Mills teenage daughter who has difficulty in accepting her 'unusual' stepmother. Both hilarious and touching, 'My Stepmother Is An Alien' wonderfully demonstrates how beings from two totally different planets are actually quite compatible after all.