On October 23, 1992, there was an improvised performance in the small auditorium of Washington in St. Louis, USA, without a separate stage and fancy equipment or effects. With the front floor of the small auditorium as the stage, there are only small lights, props, and various lines that illuminate the stage in front with a chair and an amplifier.

One day, a woman (Lee Soo-yeon) goes to a police station and claims she's confessing to a murder. The more surprising this is, she claims to be his wife. The police goes to the scene of the crime and sees a man (Choi Joo-hyeok) stabbed to death. Her husband is a well-known entrepreneur but he is found miserably dead. Soo-yeon's story is shocking. Her husband was the Devil himself. He treated his wife as a sexual plaything and even dared to covet her sister (Lee Ji-yeon).