An upper-class widow in Joseon keeps her double life as a masked vigilante under wraps — until a government official learns of her nightly escapades.

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.