Underdog rescues a boy locked in a bank vault, causing destructive mayhem in the process; An army of huge mechanical monsters invades the city and capture Polly Purebred; Simon Bar-Sinister develops an energy ray that turns its target into a photograph. He kidnaps Sweet Polly Purebred to trap Underdog into a photograph and tear him up; The Indian Gophers plan to send the colonel to the moon in a rocket; Commander McBragg tells how he untrailed a group of savages

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

Simon forces Sweet Polly Purebred to broadcast an ultimatum to the city. When Underdog comes to save the day, Simon uses his snow ray on him; Underdog has been frozen by Simon's snow ray, and Simon holds the city in terror. General Nuisance visits the fort and threatens to transfer the Colonel because of his failure to capture the Indian Gophers. Commander McBragg tells about his encounter with Abominable Snowmen

King Klobber, from the distant planet of Zot, has promised his daughter, Princess Glissando, the strongest husband in the universe; King Klobber sends a delegation to earth to bring back Underdog to marry his daughter, against Underdog's wishes. The colonel obtains a Gatling gun which he plans to use against the Indian Gophers. Commander McBragg tells his North Pole tale.

Underdog successfully fights off the Zot army, so King Klobber kidnaps Sweet Polly Purebred; To save Sweet Polly, Underdog agrees to marry Princess Glissando. The wedding is threatened by a two-headed dragon; The colonel convinces the Indian Gophers to move to Cleveland