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