Be careful what you wish for! College freshman Morisato Keiichi gets more than he bargained for when dialling for dinner and gets an unexpected delivery — Belldandy, a real live, honest to goodness Goddess! Belldandy grants him a wish, and Keiichi decides that what he really needs is a girlfriend just like Belldandy. And that is exactly what he gets. The mysterious Ultimate Force that enforces all Wish Contracts comes into play, and Keiichi and Belldandy are now inseparable. That is when Keiichi remembers that his dorm has a strict rule: no women allowed! Can Keiichi and Belldandy find a new place to live? Will everyone buy the story that she is a foreign student? And does Keiichi have the guts to put the moves on a woman who is literally divine?