Monstar () is a 2013 South Korean television series starring Yong Jun-hyung, Ha Yeon-soo, and Kang Ha-neul. It aired on music channel Mnet (and simultaneously on tvN) from May 17 to August 2, 2013, every Friday at 21:50 for 12 episodes. The drama is about how a group of teenagers are healed through the power of music.
Seol-chan, a member of Korea's most popular K-pop boy band Men in Black, is provoked into pushing one of his crazy fans, and when that goes viral, his reputation plummets. As damage control, his agency tells him to quietly attend school for a while. Meanwhile, Se-yi, a new transfer student from New Zealand, draws attention in the school for both her talent and oddness. Misunderstandings occur between Seol-chan, Se-yi, and their other classmates. But in the midst of all the chaos, these students find a common interest which connects them to each other: music. Every character has his or her own untold stories, which have had significant impact in their lives. But as they gather together to sing and play the music they love, they learn to soothe the pain inside them, and to open each of their souls.
Monstar was director Kim Won-seok's first work after transferring to CJ E&M. On February 18, 2013, CJ E&M announced that the music drama Monstar would be aired in early April. They also confirmed Yong Jun-hyung as the male lead. On February 28, 2013, Kang Ha-neul was confirmed as second male lead.
The series features numerous song covers sung onscreen by the characters.
In this table, represent the lowest ratings and represent the highest ratings.