Aided by Mara's dark magic, Sayoko transforms Nekomi Tech into her personal playground, prompting Keiichi and the goddesses to enter her magic castle to fix things. Keiichi has made it to Sayoko's chamber, but he hasn't counted on his only ally to actually be Sayoko's spy! Will Belldandy and her sister goddesses arrive in time to save Keiichi, or will he become Sayoko's obedient lap dog?