In the city of Fondorosso, a festival is held every year, the so-called Red Bottom Festival, where anyone can spank anyone. On the last day of the festival, the dominus make their servus available for everyone to be spanked for a fee. Unfortunately for the servus, those who pay to spank them show no mercy towards them. But for one servus it was different: an adventurer, recognising her, decided to help her. Thus began their journey far and wide across the continent of Anatomia, where every place worships a body part.

But a war is just around the corner. Indeed, it is already inside. Morbus, the sick wind, blows over Anatomia, bringing with it...