"I have nightmares...I dream of my wife being held by someone else..." Recently, Teruo has been having a dream of her wife Yuka being cuckolded. At that moment, Seigo, who was in Teruo's hometown and loved him like a younger brother, visits. Yuka and Teruo are pleased to be reunited, but... That night, next to Teruo, who was sleeping, Seigo formed a secret relationship with Yuka. After realizing her discomfort, Teruo savors her frustration at the cruel reality. However, at the same time, I felt a new excitement and pleasure of stealing her betrayal...