Hikari is a new transfer student. She loves physical education so she often goes swimming at the school pool. Her teacher is a pervert who is obsessed with swimsuits, he secretly installs a camera to spy on students. When he saw Hikari's body in a swimsuit, he was attracted to her. Under the guise of helping her swim, he constantly uses his dirty hands to touch Hikari's body. Hikari also accidentally discovered his camera, but she did not suspect him and gave it back to him. It was only when his actions became too much that she realized his true nature. But it was too late, he drugged her and took photos with his phone, threatening and forcing her to obey him. From then on, Hikari had to follow the perverted teacher's orders, accept his demands, and let him have his way with her whenever he wanted...