Keiichi's life with Belldandy becomes a tad more complicated with the introduction of Megumi, Keiichi's little sister. She want to help Belldandy get closer to her brother, and arranges to send them on a romantic date. Unfortunately, Keiichi's wish has casused a few bugs in Heaven's computer, and the System Force crashes! Belldandy's older sister Urd comes down from On High to provide tech support, but decided it would be more fun if she were to fix Keiichi instead. What will happen if she convinces Keiichi that the only way to fix the system is for him to kiss Belldandy?