A woman named Yui stalks a lone woman on the streets through her camera lens. Her target is Kanako Maeda, a 30-year-old married woman. Yui works as a "breakup artist," and her current client is Kanako's husband. Although the husband himself is having an affair, he wants to end the relationship by driving a wedge between his wife and another man. After completing her investigation, Yui appears before Kanako, hands her a business card from her husband's workplace, and reveals that he is cheating. Shaken by the news, Kanako is overwhelmed as Yui kisses her forcefully and takes her by storm. Yui intensifies Kanako's resentment toward men, breaking down her resistance and drawing out intense pleasure. Yet Yui's true motive isn't merely her job as a breakup agent—it's to claim Kanako for herself.