Terri Hooley is a radical, rebel and music-lover in 1970s Belfast, when the bloody conflict known as the Troubles shuts down his city. As all his friends take sides and take up arms, Terri opens a record shop on the most bombed half-mile in Europe and calls it Good Vibrations. Through it he discovers a compelling voice of resistance in the city's nascent underground punk scene. Galvanizing the young musicians into action, he becomes the unlikely leader of a motley band of kids and punks who join him in his mission to create a new community, an alternative Ulster, to bring his city back to life.