Ishigami works at a major advertising company and is dating Ruisa, a receptionist at the same firm. However, despite being engaged to someone else, Ruisa refuses to have unprotected sex with him, maintaining a cold attitude that leaves Ishigami increasingly frustrated every day. One day, his boss and senior colleague invite Ruisa on a trip to scout locations for a company retreat. The story unfolds at a hot spring inn, where Ishigami senses something is about to happen to Ruisa. Intense encounters in the bath intertwine with deviant NTR desires, leading to graphic scenes of passionate entanglement in the cloudy, semen-filled hot spring water. #EiyoP