Rinko Sakuma, assistant to demon-summoning detective Akutabe, tries her hand at calling forth a spirit of her own and accidentally binds herself to two supernatural beings instead of one. These OVA episodes follow Sakuma juggling her new demon partners, the lust-driven Azazel and the excrement-obsessed Beelzebub, while Akutabe keeps handing her the agency's cases nobody else wants. Koutarou Douchin rounds out the household that has to adapt to Sakuma's mistake.