Black Jack and Pinoko travel to Canada and arrive at Dr. Jorujyu's lakeside cabin. Jack is shot at by the doctor's daughter Yuri, mistaking him for her brother. Dr. George s seriously ill, and Jack diagnoses hat he has mediastinal pneumonthorax causing air to leak into a body cavity. Yuri's brother arrives, and is he none other than the infamous Dr. Kiriko, who has been unable to save his father and plans to euthanize him against his sister's wishes...