The Mantis Gang are battling a rival gang on the rooftop of a city skyscraper. A helicopter arrives and Cha Eun-Jin, one of the top figures in the Mantis Gang and deadly with knives, enters the fray. During the battle, Cha Eun-Jin falls off the rooftop and lands on a truck bed carrying chickens. Although Cha Eun-Jin survives the fall, she loses her memory and the truck takes her out of the city.
Eun-Jin is then helped by Jae-Chul , a Chinese restaurant cook. Unable to remember anything about her past, Eun-Jin begins working for the Chinese restaurant as a delivery woman. Her life is relatively peaceful, until rival gang members learn about her whereabouts.
