Ever since a cosmic phone call brought the literal young goddess Belldandy into college student Keiichi's residence, his personal life has been turned upside-down, sideways, and sometimes even into strange dimensions! When Urd and Skuld are called back to the heavenly realm for remedial training, Belldandy and Keiichi are alone at last! But two things are going to complicate their getting closer as man and woman - Belldandy has come down with a mysterious illness, and thanks to fooling with Urd's medicine to try and cure her, Keiichi isn't a man anymore - he's a woman!