Tomoka, the wife of the president of a wholesaler, has fallen into financial difficulties after her brother-in-law Ryutaro steals her customers from her due to a rift between the two brothers. As if to shake off the anxiety of the reality, she spends her days indulging in affairs with her coworkers. Surrendering to the sweet sensations that penetrate the depths of her vagina, she continues to give in to his body despite feeling guilty towards her husband. However, Ryutaro finds out about her infidelity, and she is driven crazy by the men's intense thrusts without being able to do anything about it. As she continues to be cuckolded, Tomoka gradually transforms her shame into pleasure...