Mako is an ordinary girl who recently moved to Tokyo from the countryside. In the midst of searching for an apartment, she meets two women by chance and is invited to live with them. However, the two women are a lesbian couple! The film depicts their extreme lesbian desires, including intense sex, sadistic training targeted at a straight girl, and anal development, pushing the female body to its limits. As the two women entwine, Mako gradually becomes drawn into their pleasure, eventually engaging in a three-way double penetration scene. A series of bizarre and obsessive sexual encounters unfold as female lusts intertwine to the point of madness. This is a story of infinite pleasure sought by women's bodies, descending endlessly into depravity.