The film tells the story of three high school students who gathered together to help their friend’s dream come true. Suhyeon, the leader of the 8 member middle school band called A.D.H.D passed away from a tragic accident he had with other four members of the group. However, due to long break in their performance, they have to receive help from musicians in Hongdae. Would they be able to complete Su-hyeon’s bucket list?