“Defend the isle, allow no incomer, survive.” So goes the simple directive that Isla and Sandy (Gayle Rankin and Grant O’Rourke, respectively) adhere to the absolute letter from their late father. The siblings are on an otherwise uninhabited Orkney Island, in Scotland, a dramatic landscape shot beautifully by Pat Golan, upon which they live, hunting for gulls for sustenance, and relying on nothing and no one but each other and what they can find on the land. Unless, of course, they find something that clearly once belonged to a “mainlander,” as when Sandy finds a long red rubber dildo that he mistakes for either a weapon or a toy. Things are mostly peaceful for the duo until the soft-spoken, shut-in, pencil-pushing Daniel arrives to forcibly relocate them (Domhnall Gleeson).
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