A brokenhearted New York painter, Ava, and a West Coast widower, Mason, have their lives collide when Mason’s young daughter, Mia, rents out his guest house to Ava for Christmas, without her dad's knowledge, in an attempt to convince her dad she is responsible enough to earn a dog for Christmas.

Kristen suspects her new family isn't what they seem after her mother-in-law moves in unexpectedly.