Nam Sang-mi plays widowed police officer Lee Sun-ae who finds herself suddenly immersed into international espionage by Han Yoo-il (Dennis Oh), an undercover agent. Lee Joo-hyun plays Kang-Jun, who's recently transferred to the Criminal Investigation Department. He opens an old case involving Sun-ae's past that leads him to an entanglement between the current political/economic powers and their secrets. One of them, oddly enough, being Han Yoo-il. Who is this man? Why is he here?
Public Safety Station
Nam Sang Mi is Lee Soon Ae (Officer) Jung Jong Joon as Sgt. Hong Kyung Jang
Lee Joo Hyun is Kang Joon (new captain) Yoo Sun is Park Eun Joo (Officer) Kim Ha Kyoon as Lt. Jo Jung Hae Kim Bo Sung is Detective Shim Ahn Yeon Hong is Officer Oh Na Ra Yoon Joo Sang as the commanding officer
Joong Ang Gymnasium
Choi Bool Am is Choi Bum Koo Lee Ki Yeol as Wang Sa Bal (Big Bowl) Kim Joon Ho as Kaori (Stingray)
Dennis Oh is Han Yoo Il (investor) Ki Joo Bong as Yoo Il's assistant Sung Eun as Choi Ji Soo (actress) Kim Il Woo as Song Hyun Chul (Jang's Uncle, investor) Kim Yong Hee as Park Sil Jang (politician) Kim Min Jong Jung Hwan Park Jung Woo
Chief Producer: Choi Chang Wook Director: Go Dong Sun Screenwriter: Kim Ki Ho, Lee Sun Mi Author: Kwon Mi Kyung