Wishing to be stronger than anyone else, Ito Mao abandons her identity as a woman and fights in the men's professional wrestling ring. Hiding her chest and wearing tight competition briefs, she disguises herself as a male wrestler, gaining popularity among female fans for her strength and handsome appearance as she rises through the male wrestling world. However, the promotion owner, driven by corporate profit, disregards Ito's pure pursuit of strength and sends in his prized wrestler, "Gamma," to defeat her. Yet, Gamma falls before Ito's might. In response, the owner deploys the undefeated powerhouse "Omega." Boasting "I never lose, no matter the opponent," Omega confronts Ito. In the beginning, Ito attacks with speed and kicks, but Omega absorbs every blow unharmed and counters fiercely. Pushed into a corner, Ito struggles to fight back, but her damage against Omega is minimal, and she instead suffers brutal retaliation. Realizing her weakness, Omega declares, "You're a woman," and begins targeting her sensitive, feminine areas. Ito desperately resists, shouting, "I'm a man," but cannot overcome Omega's monstrous strength and is slammed down onto the ring. As Ito lies defeated, the owner appears before her, condemning the presence of a woman in the ring as "guilty," determined to make her painfully aware of her feeble femininity. From here, a hellish tragedy begins.