ベルダンディーが螢一の元にきて、３度目の春がやって来たある日、月である異変が起こっていた。 ある事件が元で天上界から月に幽閉されていたある人物を脱獄させる為に心同じくするものが手引きをして脱獄させていたのだ・・・・そんな事は、地上界にいるベルダンディー達にはまだ知らされていなかった。
A prisoner, Celestin, escapes from the moon prison. Soon, Celestin appears before Belldandy and kisses her, causing her to faint. Peorth in Asgard, informs Urd about Celestin's escape. Someone then get's a virus into Yggdrasil through Belldandy, which causes Asgard to seal off all connections to Midgard, isolating the Norns. Belldandy finally wakes up, but she has lost all memories of Keiichi. Peorth reports the incident to the council and Belldandy and Keiichi travels to the NIT. During their stay there, Morgan appears and approaches Keiichi. Due to Morgan's interference, Belldandy participates in the motorcycle race being held by The NIT Motor Cycle Club to beat her. After the race, some of Belldandy's memories return, but Celestin appears again and triggers some buried memories, especially the image of a strange gate. Urd and Keiichi rescue Belldandy from Celestin, but Keiichi gets hurt in the process.
