Honban ura kairaku

Kurata, a migrant laborer, works at a construction site. His mother and younger sister, Yasuko, are back home, but Yasuko is practically ill from the shock of being raped. His entertainment is watching underground videos in his cramped apartment, and one of the women featured in one resembles Yasuko. One day, after receiving a telegram informing him of Yasuko's death, he gets drunk and wanders the streets, where he meets Momoko, a prostitute at a shady bar. He is attracted to Momoko, who looks just like Yasuko. However, when he learns that Momoko has been captured and raped by a gang of yakuza, he rushes to the scene...