Unable to endure her husband's violence any longer, Ryu ran away with her son Kenji to a hot spring inn in the countryside. However, Ryu had developed feelings for Kenji that went beyond mere maternal love, as he was always the one who protected her from her husband. Unable to control herself, Ryu pounced on Kenji's penis while he was in the room. But this act was witnessed by the innkeeper. Ryu was forced into giving oral sex as a condition of silence. Later, after confirming each other's feelings, mother and son sought each other's bodies in the nighttime hot spring.
