One night, Shirou Kazami accidentally witnesses a murder by the evil organization Destron, making him their next target . In their first attempt was foiled when Shirou's sister. Yukiko, surprised him, causing him to spill his coffee. In their second attempt, they attacked him while practicing motorcycle racing with Tobei Tachibana. In their attempt, a Destron soldier, disguised as a doctor, tried to put a poison shot in Shirou, while he was being transported to the hospital (after Destron's second attempt), but Shirou regains consciousness and kills the soldier. Meanwhile, a young woman named Junko Tama stumbled upon Destron's base. Suddenly, she was attacked by Destron. While trying to escape, she ran into Shirou, who was heading home on his motorcycle, but Shirou didn't see the Destron soldier.