Short films by short people; Santa goes to Orlando; Dennis is a menace again on NBC

A boy, his horse and an incredible journey: That’s the story to Flash, this week’s offering on “The Wonderful World of Disney” (ABC, Sunday at 7 p.m.). After his father joins the merchant marines and goes to sea for six months, 14-year-old Connor Strong (Lucas Black) must sell his beloved horse to pay for an unexpected expense. But when Lucas sees Flash mistreated by the new owner, he runs away with the horse and travels across the country in hopes of reuniting with his father. For the family.

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The Short Films by Short People Film Festival (Nickelodeon, Sunday at 8 p.m.) features eight films that the cable channel developed and produced with the children who came up with the ideas. The program will be hosted by the kids who made the films, which include “Foilman,” who must save a cafeteria from running amok, and “Nothing Weird,” about two brothers with their own TV network. For ages 10 to 13.

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Walter Matthau stars as Mr. Wilson and Mason Gamble is Dennis, his mischievous young neighbor, in Dennis the Menace (NBC, Wednesday at 8 p.m.). The film is based on the classic comic strip of the same name. For ages 5 to 10.

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Santa Claus delivers his last present and leaves for Walt Disney World in sunny Florida just in time to celebrate A Magical Walt Disney World Christmas (KABC, Thursday at 4 p.m.). The event is hosted by Melissa Joan Hart, star of “Sabrina, The Teenage Witch,” and Ben Savage, star of “Boy Meets World.” There are music and dance numbers, behind-the-scenes tours of Downtown Disney, and appearances by Mickey, Minnie and the rest of the Disney stock characters. For the family.

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A bunch of heroic kids use friendship, teamwork and futuristic vehicles to try to escape storm troopers in Doom Runners (Showtime, Thursday at 8 p.m.). Twelve-year-old Adam (Bradley Pierce) and his 14-year-old sister, Jada (Lea Moreno), struggle to survive in a place called the Aftertime. After the death of their grandfather, the kids’ only protection against the Doom Troopers is provided by Deek (Dean O’Gorman), Vike (Nathan Jones) and Kenji, the cyberdog. For ages 7 to 12.