In an abnormal world where a fierce sadistic battle between large female fighters unfolds in the confined space of a private dojo. Hirai Kanna arrives to destroy the dojo due to a minor grudge with Erika. Kanna is superior in both physique and skill, yet acts strangely at times, making her an enigmatic figure. Erika is the dojo master, a woman who dedicates herself daily to training and discipline. Ichinari Kokoro, who claims to be Erika's top disciple—nicknamed "Zakomi"—is instantly defeated by Kanna, exposed in a pitiful state. He also willingly accepts punishment from Erika, serving as a submissive who craves domination. When Kanna, arriving as a dojo challenger, declares her battle against Erika, Kokoro steps forward but is immediately knocked out cold. After defeating the underlings, Kanna finally confronts Erika. A dynamic and brutal clash between two powerful fighters ensues, but the losing side faces the dojo's horrifying rule: becoming a test subject for extreme pleasure-based domination training. The outcome spirals toward a conclusion more cruel than imaginable...