"Monstar" depicts the lives of ordinary teens who are injured psychologically and heal themselves through the power of music. Yoon Sul-Chan is the vocalist for the group "Man in Black". He carries deep wounds within his mind, but doesn't express his feelings. Because of his hot temper, he causes trouble. His management company then orders him to carry himself as an ideal student. He joins a music band at school, while facing unexpected events.
Yong Jun-hyung
Ha Yeon-soo
Kang Ha-neul
Yoon Chan-young
Nat Thewphaingam
Dahee
Ahn Nae-sang
Kim Young-ho
Lim Kim
Jo Jae-yun
Kim Hee-won
Moon Yong-seok
Yoon Jong-hoon
Lee Min-hyuk
Lee Chang-sub
Lim Hyun-sik