
A former secret agent, Ki-heon, has been living in seclusion due to trauma. As Ki-heon meets a cloned human, Seo Bok, his restless journey begins. The Ex intelligence agent 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.