Two detectives communicate through a walkie-talkie to solve a cold case. One detective exists in the present day, and the other detective exists 15 years in the past.

• Kentaro Sakaguchi
• Kazuki Kitamura
• Michiko Kichise
• Yuichi Kimura
• Tetsuhiro Ikeda
• Kaede Aono
• Fuju Kamio
• Atsuro Watabe