완전 신명나고 대박 흥겨운 합창단이 온다!

국립전통예술고등학교 3학년에 재학중인 판소리 전공 슬기와 경기민요 전공 아름은 세상에서 둘도 없는 단짝 친구 사이. 고3 여름방학. 남모를 부담과 불안감속에 방황하던 사고뭉치 두 녀석은 출석일수가 부족한 탓에 여름방학 특별수업에 참여하게 된다. 한 편 교육청으로부터 합창대회에 참가하라는 통보를 받은 학교는 새로 부임한 작곡가 출신 함선생에게 특별수업을 받는 아이들을 대상으로 합창부를 만들어 지도할 것을 요구한다. 그러나 서양음악전공인 함선생과 국악만 해온 아이들은 사사건건 부딪치기 일쑤! 과연 이들은 무사히 합창 공연을 마칠 수 있을까? Dream your song! Sing your dream! Seul-ki and Areum are best friends and they both study Traditional Music in high school. Two girls have their own problems; Seul-ki, born as a granddaughter of a famous Pansori (Korean traditional folk opera) singer, is under a lot of pressure from high expectations of family and school. Areum lives with her aunt after her parents had passed away when she was little. She desperately needs to go to the national college where the fee is cheaper. The girls start their last summer vacation in high school, but still, nothing is certain about their future. Feeling anxiety, two girls end up getting into trouble. One day, they are told to take a supplementary class in order to fill up their attendance grade. In the meantime, their school gets an order from the Ministry of Education to participate in a choir contest. The new-comer Mr. HAM is asked to organize a choir with the students who take the supplementary class and direct it. However, the students have no interest what-so-ever in singing in a choir. Even worse, Mr. HAM who majored in classical music and the students who have always studied traditional music have nothing in common. Gradually, Mr. HAM and the students understand each other and prepare a great performance with all their hearts. But the contest is cancelled, and the choir faces the danger of a breakup. Will they be able to save the choir and give amazing performance?