Mark is an arm wrestler and dreams of becoming a champion. Jin-ki is a promoter and he dreams of turning his life around by using Mark. But then Marks sister Soo-jin appears and changes the live of everyone.

Min-jae, a rookie police officer with a natural born talent for driving, is assigned to the perfect team: the Hit-and-Run Squad. But at the same time, for police detective Si-yeon, it is a place she is unjustly demoted to for doing her job. The two team up to arrest the rich and powerful speed maniac Jae-chul who is suspected of committing crimes for his obsession for speed.