Two work colleagues, Linda Liddle (Rachel McAdams) and her arrogant boss Bradley Preston (Dylan O'Brien), are the only survivors of their company plane crash on a deserted island, forced to rely on one another for food and shelter, as well as confront old resentments and conflicts. As dwindling resources and rising paranoia put them in a psychological strain, they struggle not only to survive the island's unforgiving brutal environment, but also to navigate an escalating battle of shifting power dynamics filled with dark humor, tension and unexpected twists.