Keeley Littleton's love for Christmas knows no bounds. Landing a dream job as an assistant set designer at a company that produces holiday movies fills her heart with pure joy. With the promise of a year-round festive atmosphere, Keeley believes she has found her own personal winter wonderland. On the other hand, Finn O'Connell is a weary veteran of the Christmas movie industry, having already churned out three films this year alone. The once-charming holiday has lost its sparkle for him. Yet, the steady work and the opportunity to care for his younger sister in a stable environment keep him going, despite the monotony. Bad enough his costar in this movie is one of his least favorite people, but the new set designer with her boundless enthusiasm grates on his nerves like a persistent jingle bell. But when they are forced to work closely together, Keeley's infectious enthusiasm gradually chips away at Finn's cynicism. Can he learn to love Christmas...and Keeley?