Every night, in a deserted school building in Roppongi, four women engage in an illicit underground fighting competition known as “Girl’s Blood.” Each participant brings her own unique background and personal challenges to the ring. Satsuki (played by Yuria Haga) grapples with gender identity issues, Chinatsu (portrayed by Asami Tada) is fleeing from a violent spouse, Miko (Ayame Misaki) embraces her role as a dominatrix, and Mayu (Rina Koike) is characterized by her youthful, doll-like appearance.