You play as Kate, the stereotypical stay-at-home, living a dreary, mundane (and ugly) existence with a workaholic husband. That is, until you are presented with an offer to slip under your front door. A corporation of demons offers to give you the body and looks of your dreams, but in exchange, you must generate "energy" for them. The exchange is simple, but it has its risks. If you overload the magic crest you were given, you'll become a succubus and lose your humanity entirely. But is that really such a bad thing ...? The simulation they put you in while your body is undergoes the process. What will Kate do? Will she still be herself when she wakes up?