Fearing her boyfriend is cheating on her, Nicole tests him with a fake social media profile she’s made under the name “Heather Harris.” But when a girl named Heather Harris enrolls at her school, Nicole suspects something sinister.

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.