After losing her parents, Kanon is taken in by relatives, only to be forced into a dark, cramped room where her human dignity is stripped away. She is not even allowed to wear clothes, treated like a dog, and forced to live in constant suffering. Bound by a collar, she endures intense torment—strong abuse, electric massager stimulation, beatings, and being stepped on. She is first assaulted by her stepfather, then repeatedly and forcibly raped. But her ordeal culminates in a public gang rape in front of her classmates. This film captures the ultimate experience of receiving 20 consecutive creampies.