Meet Arthur Dalton, a wealthy businessman in New York City with expertise in electronics. His life has been devoted to work ever since losing his beloved wife during childbirth. As such, he is urgently in search of a reliable nanny to care for his lively five-year-old daughter, Hayley, who tends to be quite mischievous. Enter Kathleen Moore, a dedicated delivery girl at her family's restaurant. Their initial encounter didn't go smoothly, as Arthur accidentally imprisoned her under the mistaken belief she was attempting to kidnap Hayley. Despite their rocky start, Hayley surprisingly forms a strong bond with Kathleen, much to Arthur's surprise. Realizing he must honor his daughter's wishes, Arthur reluctantly hires Kathleen as Hayley's nanny. However, as the holiday season approaches and they spend more time together, Arthur finds himself drawn to Kathleen in ways he never anticipated. He had vowed to keep his heart closed, but the close quarters during the festive season make it difficult to resist. Adding to the complexity, Hayley's Christmas wish surprises everyone – she simply desires a new "mommy." As these unexpected emotions swirl around them, Arthur and Kathleen must navigate their growing connection while addressing the needs of a child who has captured their hearts in different ways.
