Goodbye Mr. Black

Cha Ji-Won serves as a UDT officer in the Navy Special Operations Force. Known for his optimism and charisma, he finds himself in a dire predicament after being betrayed by a friend. Facing multiple life-threatening challenges, Cha Ji-Won decides to conceal his identity by entering into a sham marriage with Swan. Her cheerful nature helps him rediscover love and rebuild his trust in people.