Ten years into her marriage with a younger husband, Riho has been struggling with a sexless relationship. One day, when she confronts him about his infidelity, he brazenly forces a blowjob on her. Heartbroken by his attitude, Riho shuts him out emotionally and seeks refuge with her brother-in-law, asking for his support. This leads to an affair between her and her brother-in-law, awakening new desires within her. Her relationship with her husband takes a drastic turn as Riho begins walking a new path of sexual fulfillment.