The film begins with Tae-il’s back looking at ocean waves. Tae-il, who is writing a song about the sea but can’t complete it, goes to a country village to meet Jiwon, who had been in a band with him in the past. He meets her working at a music academy there and a rock band of middle school students she teaches. Spending time with the students who are clumsy but full of passion for music and Jiwon who still has sincere affection towards music, he recalls the happiest past time with music.