Lee Chan Suk (Ryu Jin) is a cautious and intelligent law-inforcement agent who is in pursuit of crime suspect Kang Hyun Gee (Lee Jong Won). Hyun Gee's biological sister, Han Sae Jin (Lee Yo Won), was raised as an only child by her weathly adopted family. At first, Chan Suk uses Sae Jin as bait to capture Hyun Gee, but over time he begins to fall for her pure heart.


Cast
    * Ryu Jin as Detective Lee Chan-suk
    * Lee Yo Won as Han Se-jin / Kang Hyun-joo
    * Lee Jong Won as Kang Hyun-gee
    * Yum Jung Ah as Lee Ho-sook (Ho-koo's sister)
    * Son Tae Young as Cha Da-hae
    * Sun Woo Eun Sook as Hwang Soo-mi (Se-jin's mother)
    * Lee Dong Wook as Lee Ho-goo
    * Chun Ho Jin as Captain Cha Pan-jang (Da-hae's uncle)
    * Lee Jung Gil as Se-jin's father
    * Park Geun Hyung as Lee Myung-sup (Chan-suk's father)
    * Park Ji Young as Hun-ki's mother
    * Lee Jung Yong as Detective Moon
    * Son Jong Bum as Detective Baek
    * Park Joon Hyuk as Detective Ha