When Urd and Skuld have to return to Heaven for work, Keiichi and Belldandy are left alone.  Skuld, not wanting anything to happen while she's away, makes a flan for Keiichi which turns him into a girl.  Belldandy and Keiichi try to turn him back but he drops an ingredient which cause Belldandy to get sick.  To make things worse, Skuld invited Megumi and some of the Auto Club over.  When Belldandy gets worse, Keiichi is able to somehow call Heaven and tell Urd about her sister.  They have to use wind crystals to cure her and it's up to Keiichi to get them to her.