Mai has just moved into her new home, and when she goes directly to her neighbor Shimonuma's house to complain about the pesky, foul-smelling middle-aged man who lives in a house that's practically a garbage dump, he becomes enraged, throws her down like a wild beast, and repeatedly rapes her, cumming inside her until she cums again and again...The foul-smelling middle-aged man's abnormal sexual proclivities accelerate with each ejaculation...After ejaculating repeatedly while masturbating, Mai doesn't finish it off, and on her extremely dirty futon, a helpless female student becomes the prey of his filthy brother in a horrifying rape.