Can there be too much of a good thing? For Keiichi Morisato, who lives with three sister goddesses - literal goddesses - the good-thing limits are tested on a daily basis. When Keiichi accidentally contacts Peorth, an old friend and rival goddess of his girlfriend Belldandy, Peorth shows up with the assignment to make Keiichi happy...whether he likes it or not! Peorth decides that what Keiichi needs is...well, intimacy (if you get the drift), and so she creates a love potion to draw Keiichi into her arms. But Peorth gets the potion wrong, and instead, any woman Keiichi looks in the eye - girls, goddesses, and even his kid sister! - falls in love with him! When it rains, it pours...