Rena's happy marriage collapses when Saji, her husband's younger boss, reveals that her husband has caused a major loss at work. While she reels from the betrayal, Saji tells her that saving her husband will require absolute obedience and sexual service. Determined to protect him, Rena offers her body and is drawn into humiliating breast-focused training. “Please knead and play with Rena's filthy nipples.”