|The Spy: Undercover Operation: A secret agent, who hides his true identity from his wife, works on a case that affects entire country of South Korea. Chul-Soo is the secret
agent who hides his occupation from others, including his flight attendant wife Young-Hee. One day, Chul-Soo tells his wife that he will go to Busan, South Korea for business,
but actually travels to Bangkok, Thailand to carry out a national operation.