The Navy Special Operations Force has Cha Ji-Won serving as an officer in the Unified Defense Team. He is optimistic and has a charming personality, but owing to the betrayal of a friend, he finds himself in a precarious situation. He is placed in a number of perilous scenarios that could result in his death. Next, in order to conceal his true identity, Cha Ji-Won stages a marriage with Swan that never actually happened. Cha Ji-transformation Won's into the charming persona of Swan allows him to rediscover his capacity for love and to win back the faith of his peers.