Ana Deschanel made a terrible mistake. The only chance of protecting the other people involved is to flee New Orleans, the only home she has ever known, for the quiet solitude of the remote North Atlantic.

Summer Island, Maine (population 202) is not the tranquil escape Ana envisioned. The locals are distant and cold, especially her neighbor, the reclusive veterinarian Jonathan St. Andrews. Her only lifeline is the kind but odd caretaker, Alex Whitman, who conveniently shows up at all the right moments, warning her she’s completely unprepared for a Summer Island winter. As the first seasonal storm approaches to whispers of an island shutdown, Ana realizes she may soon be cut off from the rest of the world.

After a surprising encounter with Jonathan’s diametrically different brother, Finn, Ana braves the storm to return something he lost, only to slip and fall on the jagged shoreline. The St. Andrews brothers find her in the nick of time, and bring her back to their home to ride out the blizzard. As both the storm and Ana’s condition worsen, the St. Andrews brothers learn there are more sinister forces at work closer than they ever imagined.

With no help from the outside world, they must find a way to protect themselves from both the storm and the growing darkness that looms across the island.