"You were born to wear a school swimsuit..." Harassed with these hysterical words, transfer student Himeka becomes the target of her homeroom teacher, who is obsessed with school swimsuits. At the poolside, she's drugged and rendered unconscious, then forcefully taken and photographed while still in her swimsuit. Using the photos as blackmail, he repeatedly assaults her in her swimwear, over and over again. The more she resists, the more aroused the depraved teacher becomes, delighting in her suffering. Eyeing her in the swimsuit, he murmurs, "You look more delicious than anything," and their twisted, private lessons continue with no end in sight. This distorted relationship goes on and on.