A forty year old woman who feels like she has not accomplished anything in life and a twenty-seven year old man who's frightened of himself.

Mild-mannered Tae-jung is wrongfully imprisoned for a heinous crime. He soon discovers that a mysterious figure named Yo-han orchestrated his downfall. Fueled by vengeance, Tae-jung sets out to make Yo-han pay.

A story where ten people get the chance to go back in time by one year, but unexpectedly mysterious situations start to arise when their fates are changed and twisted in the process.

Ji Hyung Joo is a detective in the violent crimes division. He used to be part of the traffic police but was promoted when he arrested a wanted criminal.

It's been seven years since the change, and he's a talented individual who always knows how to relax. Though he is happy at first to have the chance to go back in time by one year and "reset" his life, he begins to search for the truth when a series of mysterious events befall on the group of people he goes back in time with. Based on the Japanese novel, "Repeat"

Dongsoo ist ein Einzelgänger und vertreibt sich die Zeit damit, Musik ins Internet hochzuladen. Sein Alltag wird auf den Kopf gestellt, als er von einem Organjäger entführt wird, der ihm eines seiner Augen raubt. Daraufhin sieht Dongsoo das, was der neue Besitzer seines Auges erblickt. Durch die gemeinsame Wahrnehmung erfährt er, dass der Dieb ein berüchtigter Serienmörder ist, und geht auf die Jagd nach ihm, um sich sein Auge zurückzuholen.