Synopsis

Kawakubo Ryo (Matsuda Shota), an ace detective in the Metropolitan Police Department’s Special Unit, is assigned to escort a mysterious man from America named Sung Sion (Taemin). During transport, their vehicle comes under gunfire, resulting in the death of Ryo’s colleague Kuroki (Okuda Eiji).

When a bombing incident occurs in Tokyo, Ryo receives unexpected orders to investigate alongside Sion as part of the Special Unit. Despite the life-threatening nature of the investigation, Sion demonstrates remarkable deductive abilities that prove invaluable to Ryo. However, during their pursuit of the truth, Sion is targeted and shot in the head by an unknown assailant.

Though Sion survives surgery, doctors discover evidence of previous extensive brain surgery, revealing that someone has been targeting his life. This discovery deepens the mystery surrounding Sion’s true identity.