College sophomore and avid motor club member Keiichi Morisato is down on his luck. Though a gentle and caring soul, his lack of height has made it difficult for him to get a girlfriend and the Star of Misfortune perpetually shines over his head. The Heavens have taken notice of his plight and judged that an imbalance exists, so when Keiichi calls a wrong number one night, he instead hooks up to the Goddess Hotline. Moments later Goddess First Class Belldandy steps through his mirror and declares that he is to be awarded one wish. Not quite believing what he is seeing and overcome by Belldandy's declarations of his merits, Keiichi wishes that a goddess like Belldandy could be by his side forever. To his shock, his wish is granted, and that's where the trouble begins.