On a small, windswept Scottish island, siblings Isla and Sandy have lived in near-total isolation for decades. They hunt seabirds, speak to mythical creatures, and defend their isle from dreaded incomers, but their fragile world is upended by the arrival of a council worker who's determined to uproot them to the mainland. Gayle Rankin, Grant O'Rourke, and Domhnall Gleeson star in Louis Paxton's wild, darkly comic debut.