Cassie and Tom lost their parents at a young age and relied on each other as well as a community of friends to cope. But now, 20 years later Cassie has lost Tom as well. She has never felt more alone. Then Cassie finds an envelope with her name on it, written in Tom’s terrible handwriting and she knows immediately what it is. It’s the first clue in the Christmas scavenger hunt that Tom made for her every year. He’d promised her for months this year’s would be the grandest one yet.