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.
Cheondong got dumped by his first love Murim 8 years ago. He's on the verge of getting sick of his boring life when Murim appears in front of him as a ghost. Even before he could accept Murim's death, Murim asks him for a favor. It's to find his boyfriend. Cheondong gets angry at first but he ends up looking for her boyfriend...
Shortly after the Korean war, a father and a son are wandering through the country and make a stop in a remote village, where strange and dangerous happenings occur.
Ninja Assassin follows Raizo, one of the deadliest assassins in the world. Taken from the streets as a child, he was transformed into a trained killer by the Ozunu Clan, a secret society whose very existence is considered a myth. But haunted by the merciless execution of his friend by the Clan, Raizo breaks free from them and vanishes. Now he waits, preparing to exact his revenge.