Ace NIS agent Jung Hae-seong is demoted after a mission failure. He goes undercover at a high school to locate King Gojong's missing gold, meeting his teacher Oh Soo-ah, who sees him as her lost first love, stirring old heartbreak.

Nora and Hae Sung, two deeply connected childhood friends, are wrest apart after Nora's family emigrates from South Korea. 20 years later, they are reunited for one fateful week as they confront notions of love and destiny.

A detective investigating a man's death in the mountains meets the dead man's mysterious wife in the course of his dogged sleuthing.

Two people let a road rage incident burrow into their minds and slowly consume their every thought and action.