A childless couple runs into a pregnant classmate at their high school reunion and agrees to adopt her baby, little realizing she has sinister plans for them.

Angie is determined to spend Christmas alone but her usual commuter ride turns into a Christmas train that drops her off in her home town in 2011.

Annie and Tom Clark throw a holiday party every year, "Clarkmas." Over the years, it's become the go-to holiday event for their ragtag group of friends. When chronically single Natalie and Logan continue to run into each other at the