[ THE CLAN: X ]

Yoo Kihyun, the leader of South Korea's biggest gang, has returned to Seoul after 7 years. On the flight back, he meets a handsome flight attendant, Son Hyunwoo, and develops a liking for him.

But when he receives a call from an old nemesis, he gets the biggest shock of his life. Is Son Hyunwoo really as simple as he seems? 

Read on to find out.