A hitman accidentally kills a little girl. Filled with regret, he wants to quit. But then to tie up loose ends, he is forced to go on another job, to kill the girl's mother.
Ex intelligence agent Ki-heon is tasked with safely transporting Seo Bok, the first ever human clone, who holds the secret of eternal life. Several forces try to take control of Seo Bok to serve their own agendas.