故事发生在1980年代的都柏林，因为家境窘迫，十四岁的少年康纳（福迪亚·瓦尔什-匹罗 Ferdia Walsh-Peelo 饰）不得不转学来到了一所校规极为严苛死板的教会学校中就读。在那里，他惹上了横行霸道脾气古怪的巴里（伊安·肯尼 Ian Kenny 饰），可见未来的日子不会好过。 　　某日，康纳邂逅了名叫蕾菲娜（露西·宝通 Lucy Boynton 饰）的美丽女孩，为了吸引蕾菲娜的注意，康纳邀请她来主演自己乐队拍摄的MV，哪知道蕾菲娜欣然应允，那么问题来了，对演奏音乐几乎一窍不通的康纳，该如何在短时间内组建一支乐队呢？好在康纳拥有一群热爱音乐的朋友们，很快，一支名为“唱街”的乐队成立了。This is the mid eighties and everybody is moving to the beat of Pop music as the brand-new concept of music videos appears on television for the first time. On the other hand, in Dublin, Conor, a teenager with a sensitive heart, is trying to deal with a tense family relationship, reconnect with his older brother, and deal with the hostile environment of his new public school - but then, one day, he sees her - tall, with long chestnut hair, a buttery complexion and big, blue eyes - an enigmatically beautiful girl standing in front of the gate of his school indolently observing people passing by. Who is she and how could a boy ever get noticed by such a distant girl? Easy. He would form a band. With every lyric Conor writes, the gap narrows, and with every song he plays, her heart fills with affection. In a sea of opportunities ahead of them, what does the future hold for a love like this?