Littlefoot's Adventures of Princess Protection Program is another upcoming Land Before Time/Disney crossover film planned to be re-edited by Yru17. It will appear on Vimeo in the near future.
Princess Rosalinda Maria Montoya Fiore (Demi Lovato) is about to be crowned queen of the small nation of Costa Luna. General Kane (Johnny Ray Rodriguez), the dictator of neighbouring country Costa Estrella, infiltrates her palace with his agents during her coronation rehearsal, and attempts to capture the royal family and take over the country. Joe Mason (Tom Verica), an agent of the Princess Protection Program, a secret organization funded by royal families that looks after endangered princesses, whisks her away to safety via helicopter. Kane’s agents however succeed in capturing her mother, Queen Sophia.
The Princess Protection Program hides Rosalinda in Mr. Mason’s home in Louisiana, where she is to pretend to be a typical American teenager named Rosie Gonzalez. She meets Mr. Mason's daughter, Carter Mason (Selena Gomez), an insecure tomboy who works at the family bait shop and dreams of going to the homecoming dance with her crush, Donny (Robert Adamson). Though Carter initially treats Rosie with annoyance and barely-masked hostility, she warms up to her after Rosie explains her situation, and the two become close friends. Carter teaches Rosalinda to act like a normal girl and Rosie shows Carter how to disarm those that scorn them by behaving as a princess. Rosie soon becomes popular at their high school.
In an attempt to trick Rosalinda into exposing her location, General Kane announces plans to forcibly marry Rosalinda’s mother. Rosalinda is distraught and tells Carter that she has decided to secretly return home. Knowing Costa Luna is still too dangerous, Carter secretly devises a plan to pose as Rosalinda and then use herself as bait to lure Kane into capture. Mr. Elegante, Rosalinda's royal dress maker, tells Kane that Rosalinda will be attending the homecoming dance and will be wearing a blue dress that he actually sends to Carter. In the meantime, Rosalinda agrees to help Carter behave like a princess by helping a group of girls dress up for the dance; The girls all wear masks, which helps Carter disguise herself as Rosalinda.
According to plan, Kane and his agents mistake Carter for Rosie and lead her to Kane's helicopter the night of the dance. However, Rosalinda narrowly discovers and ruins the plan by exposing herself to Kane, insisting that this is not Carter's fight. Fortunately, agents of the Princess Protection Program, including Mr. Mason, have been waiting inside the helicopter and rescue both girls. The PPP agents quickly apprehend Kane and his henchmen and turn them over to the international authorities.
At the end, Carter realizes what "a jerk" Donny is and goes to the dance with Ed, her best friend who has had a crush on her for a long time. Rosie is crowned Queen of Costa Luna with Carter, Mr. Mason, Ed, Rosalinda's mother, and Mr. Elegante in attendance while the song "Two Worlds Collide" plays.
- Stan Marsh, Kyle Broflovski, Eric Cartman, Kenny McCormick, Ike Broflovski, Wendy Testaburger, Ali, Tricia, The Muppets (Kermit the Frog, Fozzie Bear, The Great Gonzo, Miss Piggy, Rowlf the Dog, Scooter, The Eletric Mayhem, and Rizzo the Rat), Alex, Marty, Melman, Gloria, The Penguins of Madagascar (Skipper, Kolwalski, Rico, and Private), King Julien, Maurice, Mort, Marlene, Terk, Tantor, Louis, Ray the Firefly, Taran, Princess Eilonwy, Fflewddur Fflam, Gurgi, Orddu, Orgoch, and Orwen, Aladdin, Abu, Genie, Iago, Barney the Dinosaur, Baby Bop, BJ, Jesse Greenwood, Elvis, Randolph Johnson, Nadine, Jean-Bob, Speed, Puffin, Tori Vega, Andre Harris, Robbie Shapiro, Jade West, Cat Valentine, Beck Oliver, Trina Vega, Rex Powers (puppet), Toaster, Lampy, Radio, Blanky, Kirby, Chanticleer, Goldie, Shrek, Donkey, Princess Fiona, Dragon, Puss in Boots, Sebastian, King Louie, The Vultures (Buzzie, Flaps, Dizzy, and Ziggy), Jiminy Cricket, Zazu, Kiara, Kovu, Kronk, The Goonies (Mikey Walsh, Brand Walsh, Mouth Devereaux, Data Wang, Chunk Cohen, Andy Carmichael, Stef Steinbrenner, and Sloth Fratelli), Fu Dog, Kenai, Koda, Rutt and Tuke, Nita, Roger Rabbit, Jessica Rabbit, Fievel Mousekewitz, Tiger, Tony Toponi, Tanya Mousekewitz, Yasha Mousekewitz, Papa Mousekewitz, Mama Mousekewitz, Thumbelina, Jake Sully, Neytiri, Mo'at, Manny, Sid, Diego, Ellie, Crash and Eddie, Peaches, Blu, Jewel, Rafael, Luiz, Rex, Woog, Elsa, Dweeb, Aladar, Neera, Plio, Yar, Zini, Suri, Baylene, Eema, Url, Mushu, Cri-kee, Charlie Barkin, Itchy Itchiford, Sasha, Anabelle, Jen, Kira, Ttark, Danny, Sawyer, Dumbo, Timothy Q. Mouse, Jim Crow and his Brothers, Po the Panda, Shifu, The Furious Five, Alvin Seville, Simon Seville, Theodore Seville, Brittany Miller, Jeanette Miller, Eleanor Miller, Kayley, Garrett, Devon and Cornwall, Crysta, and Batty Koda guest star in this film.
- This is the first Land Before Time crossover film to guest star the characters from Victorious.
- This film has a huge number of guest stars, due to this film not only being a princess film and a girl's film, but also being another Littlefoot's Adventures reunion.
- This film actually takes place after Pooh's Adventures of Shrek, (which explains Littlefoot and his friends already knowing Shrek, Donkey, Princess Fiona, and Dragon), Pooh's Adventures of Puss in Boots (2011 film) (which explains Littlefoot and his friends already knowing Puss in Boots), Pooh's Adventures of Shrek 2 (which explains Littlefoot and his friends seeing Shrek and Donkey making friends with Puss in Boots), Pooh's Adventures of Ice Age (which explains Littlefoot, Ash, SpongeBob, and their friends already knowing Manny, Sid, and Diego), Pooh's Adventures of Ice Age: The Meltdown (which explains Littlefoot and his friends already knowing Ellie, Crash, and Eddie), and the rest of the Winnie the Pooh/Ice Age franchise (which explains Littlefoot and his friends already knowing Manny and Ellie's daughter Peaches).
- The main reason why Louis, Ray, Aladdin, Abu, Iago, Genie, Sebastian, Jean-Bob, Speed, Puffin, Mushu, and Cri-kee are guest starring in this film is because Princess Tiana, Princess Jasmine, Ariel, Princess Odette, and Mulan will guest star without them in Pooh's Adventures of Princess Protection Program. This is the same reason why this is the only Land Before Time crossover film to guest star Aladdin, Abu, Genie, and Iago without Jasmine.
- This is an NTSC film with NTSC bits from The Land Before Time films, Thumbelina, South Park: Bigger, Longer & Uncut, The Muppets films, the Madagascar films, the Tarzan films, The Princess and the Frog, Barney's Great Adventure, The Black Cauldron, the Aladdin films, Free Willy 1-3, The Swan Princess films, iParty with Victorious, The Brave Little Toaster films, Rock-a-Doodle, the Shrek films, Puss in Boots, The Little Mermaid films, The Jungle Book 1 and 2, TaleSpin: Plunder and Lightning, Pinocchio, Mickey's Christmas Carol, The Emperor's New Groove, Kronk's New Groove, The Lion King films, Brother Bear 1 and 2, Who Framed Roger Rabbit, The Goonies, An American Tail films, Avatar, the Ice Age films, Rio, We're Back! A Dinosaur's Story, Dinosaur, Mulan 1 and 2, the All Dogs Go to Heaven films, The Dark Crystal, Cats Don't Dance, Dumbo, Kung Fu Panda 1 and 2, the Alvin and the Chipmunks films, Quest for Camelot, and FernGully: The Last Rainforest.