Every night, moans leak from the neighbor's place. Kasumi-san, who hasn't been in touch recently, can't hold back her reason and infiltrates the neighbor's balcony, peeking through the curtain gap at the neighbor's marital activities. There, the neighbor's wife is tormented with tools and positions she has never seen before. The shocking and sensual sight is unforgettable, and before she knows it, peeping has become a daily routine. However, she gets caught by the neighbors and dragged into their room. There, she is made to have sex on camera, becoming the subject of the neighbor couple's sexual slavery…
