The Spy: Undercover Operation (2013)

The film is about Chul-soo top spy in Korea, takes a trip to Thailand when word surfaces of a plot that threatens the homeland. His flight attendant wife Young-hee is also in Bangkok but she has no idea what he does for a living. Ryan, a mysterious and charming stranger, takes a shine to Young-hee, but he is hiding something. Chul-soo is madly jealous but must restrain himself to hide his identity.