Cal a cru pouvoir échapper à son père, quitter l’île de Harris et sa communauté fermée pour suivre ses rêves. Tout juste diplômé, John le contraint à revenir à la maison et le garçon doit reprendre le fil d’une vie régie par le travail et la prière, par l’élevage des moutons et le rythme du métier à tisser. Alors que ses désirs se heurtent aux exigences de John et aux attentes de la communauté, Cal va mettre au jour le plus grand secret de son père, celui qui a brisé leur famille.

Out of money and with little to show for his art school education, John-Calum Macleod takes the ferry home to the island of Harris to find that not much has changed except for him. In the windswept croft where he grew up, Cal resumes his old life, caught between the two poles of his childhood: his father John, a sheep farmer, weaver, and pillar of their local Presbyterian church, and his Glaswegian grandmother Ella, who has kept a faltering peace with her son-in-law for decades. While Cal wonders if any lonely men might be found on the barren hillsides of home, John is dismayed by his son's long hair and how he seems unwilling to be Saved. As the seasons pass, everything is poised to change as the threads holding together the fragile community become increasingly entangled.