Set on a remote island off the west coast of Ireland in the early 20th century, the story revolves around two lifelong friends, Pádraic and Colm, whose relationship encounters a sudden, inexplicable rift. Pádraic, known for his kind and gentle nature, is taken aback when Colm, his friend of many years and a respected musician in their tight-knit community, abruptly decides to end their friendship without a clear reason. This decision leaves Pádraic bewildered and deeply hurt, prompting him to seek answers and reconciliation. Despite Pádraic's persistent attempts to restore their bond, Colm remains adamant about his decision, emphasizing his desire to prioritize personal peace and creativity over social engagements and friendships.

The ensuing conflict between the two men begins to affect the entire island community, bringing to the fore underlying tensions and long-held grievances among its residents. Pádraic, supported by his sister Siobhán and the dim-witted but well-meaning Dominic, finds himself navigating a complex web of relationships, tradition, and social expectations in his quest for understanding. The breakdown of Pádraic and Colm's friendship acts as a catalyst, exposing the fragility of interpersonal connections and the profound impact of isolation and change on small communities. As the story unfolds, both men are forced to confront the consequences of their actions and the inevitability of change in their lives and relationships, highlighting themes of friendship, identity, and the search for meaning.