Beautiful office lady Maika, overwhelmed by her busy daily life, decides to treat herself to a relaxing hot spring trip. However, the inn she visits is secretly famous as a gathering spot for perverted couples. Unaware of the mixed-gender bath, she enters the hot spring only to find herself gradually surrounded by lustful men, drawn into an unexpected and intense situation. Caught between tension and excitement, she is forced to make difficult choices to protect herself. As one surprise after another unfolds, all eyes are on how she will react. Within this escape from ordinary life, Maika's inner thoughts and emotions are deeply explored.