Kyung-min and Jong-suk are former schoolmates who went their separate ways after graduation. One is a successful businessman, the other a washed-up writer. After meeting up again years later, they reminisce about their school days, and it’s no surprise that the bullying they suffered is the main topic of conversation. Back then, students known as "dogs” repeatedly humiliated those designated as "pigs.” Thus, when one of the victims stands up to a group of bullies he becomes the hope of every tyrannized outsider. During his struggle, however, as the last shred of fair play succumbs to the enemy’s heightened aggression, other dark deeds take place that are difficult to bring out even after 15 years. Perhaps this unexpected meeting will finally put things to rest. The movie joins the ranks of new Korean animated movies that reject the dominant trends of computer and 3D animation. Moreover, it makes no attempt to speak to a traditional youth audience, not only in terms of topic but also in the way it comments upon the social situation and focuses on the psychology of the characters; this is adult fare.