Mio Uehara and Makoto Seo, two girls from the swimming club who have fallen in love, are held captive at a private pool where they are subjected to various training methods to become marketable goods. Mio protects Makoto and takes all the torture in her place but the trainers can see right through her. To mold them into the ultimate submissive slaves, the two are affectionately chained together to the same training equipment, stripped bare in body and soul and brought to climax...