Chris is a girl born to a branch family of a proud line of sorcerers. Her parents retired from sorcery and raised her with lots of love, but their over-protectiveness turned her rebellious and she began studying magic on her own. Her specialty lies in summoning demons, and previously she managed to succeed in summoning the devil, Bael, and forming a contract with her. Now she attempts to summon the overlord, Leviathan, but her magic is overpowered and she’s summoned to the demon realm instead.

The strongest familiar Chris has summoned, the devil Bael, usually takes this form. After Chris is summoned to the demon realm, she’s cursed during her battle with Leviathan and unable to regain her devil form. She’s a bit airheaded and quite friendly, so without her powers she’s just a talking pet.

Anna is a mysterious demon who nurses Chris after she loses to Leviathan and lets Chris stay in one of the rooms in the Inn she owns. She makes advances on Chris at every opportunity, but she also offers lots of advice to help Chris return to her world.

The overlord Chris attempted to summon. She’s also known as Leviathan. In order to return to her world, Chris needs to either ask for her help or force her to obey as a minion. But can she?