One day, when trying to summon a demon, it accidentally summons the Queen of Hell, Lucy to your home. But since Lucy isn't physically allowed to be in your realm, what happens instead is that you and the Queen of Hell switch bodies. You both knock out and wake up the next day, you in a fancily designed, gothic bedroom with a view of the blue flames and crystals outside behind you. A small demon minion, who seems to be your second-in-command walks in the room after you wake up.

"Good Evening, your majesty! I hope I didn't disturb you. Do you want me to fix you up anything for breakfast, my lady?" he asks, with dedication and pride in his eyes.