While preparing for an adult entrance-exam role-play, a son invites his friends home for daily study sessions. His mother is proud to see him working so hard, and before long he secures admission through a recommendation. But the other adult role-play students resent him for finishing the exam race ahead of them, and turn their rage on his mother. His crazed friends storm her home and refuse every apology. From that day forward, her endless ordeal of repeated gang rape begins.