Seo Joon portrays Ko Dong Man, a washed-up taekwondo player who once successful career went down the drain after a traumatic incident.
The critically acclaimed series start off with the tragic death of Saeroyi's father whose case is never properly solved after, the CEO of the multi-million food business Jangga.
Hye Jin, a roommate, is rejected by her first love, Ji Sung Joon, who treats her with contempt, unaware she's his childhood friend.
The series centers on Cha Do Hyun, the heir to a wealthy company, who suffers from multiple personality disorder, cause of traumatic incidents he experienced in his childhood.
In this action drama, Seo Joon is a trainee cop from the Korean National Police University, he witness a kidnapping at midnight and take the matter into their own hands.
It is period drama revolves around a group of talented and dashing elite warriors dubbed the titular Hwarang.
Seo Joon portrays Lee Young Joon, a self-centered and egotistical vice president, who neglects his loyal secretary Kim Mi So. Mi So's resignation leads to misunderstandings, potentially bringing the two personalities together.