Simon invents a snow machine. He turns people into snow. Can Underdog stop him before it's to late? Simon Bar-Sinister engages in a robbery spree throughout the city, turning people into snowmen. Meanwhile, Sweet Polly Purebred discovers Simon's laboratory. The Indian Gophers deliver a gift of a totem pole to the fort, but they hide inside and conduct raids at night Commander McBragg tells about a giant fish

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