With the holiday season at hand, single mom Nicky Talbot is unemployed and struggling to afford a nice Christmas with her 8-year-old daughter. Hearing that Cartwright’s Department Store is hiring temporary holiday help, Nicky rushes in to apply, but is rejected by Senior VP Fiona Aldrich, who considers Nicky a threat to the relationship she hopes to have with Bill, a charming and handsome store manager. In a whimsical turn of events, Harry Osbourne, claiming to be a consultant from corporate headquarters, encourages Nicky to dress up and begin working as Cartwright’s store Santa Claus. With the magical help of Harry, Nicky keeps the job, but nobody knows Cartwright’s Santa Claus is a woman. Will she be able to keep her job if her secret gets out?
Elizabeth receives a sentimental surprise in time for Little Jack's first day of school. Nathan trains a new Mountie cadet. Rosemary and Lee make a landmark decision.
When Little Jack falls ill, Elizabeth and Nathan care for him together as Hickam and Mei race to secure medicine. The kids broadcast a baseball game over the radio to lift spirits.
As graduation approaches, Elizabeth and Nathan plan for a happy summer together. Lucas and Edie race Rosemary and Bill to find the gold. The town plans a sweet surprise for Minnie.
