A revenge plot Je-Hwi had hatched against Pyo a boy who bullied him since high school with a stranger he met over the internet, begins to grow way out of control with cruel and unpredictable results.

There are five lonely souls: Je-hwi, who hides himself from the world. Jang-hui, who is obsessed with certificates of qualification; Byeong-cheol, who believes that he has a fatal disease; and the lovers, Pyo and Romi. One day, a woman who committed suicide suddenly appears before them.