There are mysterious deaths of sexy women in Berlin, ladies' bathrooms, zoos, elevators. The place of death was constantly changing, the death was extremely miserable, and their left ears were cut off. Helen's sister was also one of the victims, so she asked Ace, a private investigator, to help her find the murderer. finally, the criminal who committed eight murders was caught, but strangely, the police found only seven ears in the criminal's home. Things are caught in a mystery again. At this time, a Mrs. Cruz came to Ace. She said that the killer of her daughter Margo was not the one who had been arrested, but her former son-in-law, Marshall. Ace agreed to her request and began to investigate. He found Margo's friend Rosie, boss Dickin, and ex-husband Marshall, the mystery gradually opened, but is Margo's killer really Marshall? Or is there someone else? The answer to the riddle was revealed to the world at the last minute.