This dark and gritty animation portrays the brutal world of school bullying as the starting point for a lifelong perpetuation of the instinct for violent revenge. Haunted by their troubled childhoods, Jung Jong-suk (Yang Ik-june) and Hwang Kyung-min (Oh Jung-se) reunite one evening and recall their school days spent attempting to avoid abuse by their classmates who relented only when made the subject of vicious attacks themselves. Director Yeon Sang-ho has created a startling adult animation examining inequalities of class, gender and gang hierarchies.