Four friends on a trip rescue a woman who is being beaten by a man, only to be pursued by the police. One of them lapses into unconsciousness following an ensuing car accident and the other three are arrested on suspicious of murder.
Four best friends, Yong-bi, Ji-gong, Sang-woo and Doo-man who just turned twenty and just came of age took the road to Pohang, a small city near the beach—since one of the friends, Sang-woo, is enlisting in the marine corps the day after. On the last day before Sang-woo goes off to the army, a life-changing incident dawns in front of them. The four best friends now face a situation beyond their control, and are forced through an irrevocable day.
