1969年，为了成为一流的小提琴演奏家，就读高中的佐野雅志（菅田将晖 饰）离开长崎老家，只身前往东京发展。然而他的梦想遥遥无期，令雅志不禁怀疑自己是不是根本没有这方面的才能。在学校里，他被分到传说中专门流放问题学生的二年10班。樫山满（间宫祥太朗 饰）边弹吉他边唱猫王的歌向特立独行的女孩洋子（森川葵 饰）求爱，似乎揭开了别样欢乐的青春的帷幕。不久之后，母亲的来信也让雅志重新振作起来。以文化祭为契机，他和古田政美（本乡奏多 饰）、菊田保夫（泉泽佑希 饰）、樫山满等人组成了乐队，他们似乎找到了快乐的源泉和前进的方向……

　　本片根据歌手佐野雅志的自传改编。

In early 1965, a child violinist who was expected to be a prodigy, came up to Tokyo from Nagasaki and lived in lodgings. In the 1970s, the violinist (Suda Masaki) faced a setback during the uproar over the US-Japan security treaty. Even so, he did not cut off music. By the time he realised it, he had started singing as Grape. This is a story centred around his high school and university days surrounded by different people including friends, teachers as well as older men at his part-time job.