A young woman moves into a gossipy neighborhood that is obsessed with a “Next Door”-type app. When a neighbor suddenly vanishes, the group chat pinpoints her as the prime suspect.

After Cassie is ghosted by Austin for beloved cycling instructor Summer, Cassie becomes fixated on Summer, who is everything she is not.

Taylor, a journalist, and Luke, in the military, share a special bond that grows between them over the course of several Christmases that they spend together and apart.