The seemingly friendly manager of a women-only apartment building secretly selects residents as targets, enters their rooms at night with a master key, and assaults them while they sleep. After disabling the security cameras, he hides his identity behind a mask and records the rapes to blackmail his victims into silence. He brutalizes terrified residents and creampies them, while none suspect the well-regarded manager. Afraid the footage will be leaked, the women remain silent and move away, conveniently bringing him a steady stream of new tenants to target.