A new dungeon core is born by Yuri, Goddess of Women and Lesbians, in a time when the God of Light (aka the biggest asshole in the known world) and his followers are bending the world to his whims. Yuri just wants to create a place where her followers can be protected, and hopes Mia, her new daughter and dungeon core, can create that place.

Alas, Mia inherits perhaps a bit too much of Yuri's lust and desire, and things don't quite go as planned.