Type a personality, Ava, possesses"Rent-an-Elf," a company in which she sets up a memorable Christmas for busy families. She is hired with the newly-single Liam this year and drops for him and his adorable son, Nathan. But as Ava believes she's found her game, Liam's exwife returns, wanting to patch up things. She determined to provide them with the best Christmas ever, and possibly hope for a Christmas miracle or 2 though Ava decides to place Liam and Nathan's happiness above her .