Ah! My Goddess The Movie
Plot Summary: Trouble in Paradise! Belldandy's mentor, Celestin, was imprisoned for attempting to overthrow the Goddess system, but now he's back! Using a system virus, Celestin, corrupts the Goddess system and removes all of Belldandy's memories of Keiichi! Will Belldandy's love for Keiichi prove to be the key to ruining Celestin's plans, or will it be the final ingredient necessary to destroy our reality?!
Other name: Gekijouban Aa! Megamisama, Aa! Megami-sama!: The Movie, 劇場版 ああっ女神さまっ