Asuka Furuya, an excellent swimmer, is told to participate in a strengthening camp with the boys. At the start of the camp, she thought she was practicing seriously, but she was called out by the coach for allegedly seducing the male members. Furthermore, she is forced to receive lewd guidance after being threatened with secretly filmed naked videos. And not only the coach, but the swimming club president and members also use her as a meat onahole for their sexual gratification.