Runway Cop (Korean: 차형사; RR: Cha Hyeongsa, literally "Detective Cha") is a 2012 South Korean action comedy film, starring Kang Ji-hwan and Sung Yu-ri and directed by Shin Tae-ra. It tells the story of an overzealous and overweight detective Cha Cheol-soo who goes undercover as a fashion model in order to solve a case. It reunites the two leads since the television series Hong Gil-dong (2008), and is the second film Kang has worked on with Shin since My Girlfriend Is an Agent (2009).