Robert Neville is a scientist who was unable to stop the spread of the terrible virus that was incurable and man-made. Immune, Neville is now the last human survivor in what is left of New York City and perhaps the world. For three years, Neville has faithfully sent out daily radio messages, desperate to find any other survivors who might be out there. But he is not alone.

The story of a young boy in the Midwest is told simultaneously with a tale about a young girl in New York from fifty years ago as they both seek the same mysterious connection.

Two families' idyllic ice-fishing vacation turns deadly when they awaken a creature beneath the frozen lake, forcing them to rely on each other if they want to make it safely back to land.