When thousands of presents go missing on Christmas Eve, Santa Claus enlists the help of renowned detective Hercule Poirot to solve the mystery and save the holiday. As they investigate, they discover that the Krampus, an ancient demonic enemy of Santa, is behind the plot. With the aid of the enigmatic Snow Queen, Poirot and Santa must confront the Krampus, uncover a conspiracy in the ranks of the North Pole, and race against time to retrieve the presents and ensure Christmas joy for children worldwide. Along the way, Poirot gains insight into the magical world of Santa, the nature of winter folklore, and the enduring power of wonder and generosity. In a thrilling climax, Santa defeats the Krampus by calling on the magic of the Clause that originally bound them, and Christmas is saved. Poirot and Santa reaffirm their friendship and shared mission of spreading light and hope, flying off together on Santa's sleigh to deliver a Christmas miracle.