There is a hostage situation on the KTX. Within the train is NCI agent, Min Young, who is returning from a forum, as well as a murder suspect who is on the run. Newly appointed NCI agent, Hyun Jun, enters the hostage situation in disguise. Meanwhile, the notorious murderer, The Reaper, returns from his seven-year hiatus and begins murdering people again.
Elenco: Lee Joon-gi , Moon Chae-won , Son Hyun-joo , Yoo Sun , Lee Sun-bin , Go Yoon , Kim Yeong-cheol , Oh Yeon-soo , Hong Ji-yoon , Park Si-eun , Moon Soo-Bin .