Set in 1985 Dublin, a teenage boy named Conor struggles with a tumultuous family life and the challenges of transferring to a tough inner-city school. To escape his bleak reality and win the affections of a mysterious and beautiful girl named Raphina, Conor decides to start a band. Despite having no prior musical experience, he assembles a motley crew of schoolmates who quickly become friends and bandmates. They begin to create music inspired by popular bands of the era, channeling their creativity into fun and inventive music videos that reflect their teenage angst, dreams, and budding talents.

As the band gains confidence and starts to find its own unique sound, Conor's relationship with Raphina deepens, igniting his determination to fully pursue his musical ambitions. The band's transformation from a ragtag group to a cohesive unit mirrors Conor's own emotional and personal growth. Amidst the backdrop of economic hardship and familial strife, the story illustrates the band's journey towards self-discovery and expression through the universal language of music. The narrative is rich with themes of youthful rebellion, first loves, and the transformative power of art, capturing the essence of adolescence and the pursuit of dreams against all odds.