D.O Kyungsoo is a student with high marks on every subject. Studies non stop and hardly go out. That's what D.O Kyungsoo ever did in life. His family

  One song. A composition that will change everything. 2 weeks left for the competition and three boys are making themselves ready. Including a girl who has gone through a lot of things. Now here's the thing. She composed a song to which those guys heard, and now they are back to search who that mysterious girl is. But