A reverse comedy that tells the story of a perfectionist assassin who falls and hits his head in a sauna, giving him amnesia. When a down-and-out actor switches locker keys with him, they switch lives until the hit-man, who soon becomes an action hero on TV, starts to remember things.

When two brothers are forced to fight in the Korean War, the elder decides to take the riskiest missions if it will help shield the younger from battle.

Park Sun-Woo works as an anchorman at a TV broadcasting station. He is in love with newsreporter Joo Min-Young, who is bright and honest. Park Sun-Woo then obtains 9 incense items, which allows him to go back 20 years in time. Park Sun-Woo travels to the past.