Thomas the Tank Engine Gets Frozen Fever is an upcoming Thomas & Friends/Disney crossover short sequel film to Thomas the Tank Engine Gets Frozen. It will be created by 76859Thomas. It will appear on Google Drive as part of a double feature with Thomas the Tank Engine and The Muppets Take Manhattan in the near future.
Elsa plans to give Anna a surprise birthday party with the help of Kristoff, Sven, and Olaf; but while Anna is led on a party treasure hunt by a string that winds through the kingdom, Elsa has caught a cold, and unknowingly produces a group of small living snowmen with each sneeze, who begin to dismantle the birthday party's decorations while Kristoff tries to stop them. While Elsa takes Anna on the hunt, Kristoff, Sven, and Olaf try to control the snowmen and fix the decorations in time for Anna and Elsa's return. Meanwhile, Elsa's condition rapidly worsens and she becomes delirious with fever. After Elsa nearly falls off a clock tower, Anna convinces her to take rest. They walk back to the castle where Elsa apologizes to Anna for "ruining" another birthday, but Anna reassures her that she didn't ruin anything. As Anna goes to lead Elsa to bed, the doors to the castle open to reveal Kristoff, Olaf, Sven, and a mountain of tiny snowmen, who surprise Anna. Elsa sneezes again and finally sees more tiny snowmen that she produced. Despite Anna's protests, Elsa concludes the party by blowing into an alphorn. However, she sneezes into the horn, forming a giant snowball that inadvertently shoves Hans into a cart of manure overseas. Elsa rests in bed under Anna's care. Olaf, Kristoff, and Sven escort the small snowmen to Elsa's ice palace, where they stay with her snow-giant doorkeeper Marshmallow.
- Bill and Ben, Stephen, Sooty, Sweep, Soo, Little Cousin Scampi, Annoying Orange, Pear, Apple, Passion Fruit, Midget Apple, Marshmallow, Grapefruit, Grandpa Lemon, Nerville, Princess Knight, Choppy, Prince Frank, Discord, Sunset Shimmer, Bugs Bunny, Daffy Duck, Alex, Marty, Melman, Gloria, Mushu, Cri-Kee, Lincoln and his sisters, Twilight Sparkle, Spike, Applejack, Rainbow Dash, Rarity, Fluttershy, Pinkie Pie, The Cutie Mark Crusaders (Apple Bloom, Sweetie Belle and Scootaloo), The Bakugan Battle Brawlers and their Bakugan are guest starring in this film.
- Thomas & Friends: The Adventure Begins, Thomas & Friends: Sodor's Legend of the Lost Treasure, My Little Pony: Equestria Girls - Friendship Games and Frozen Fever were all released on DVD in 2015 the same year, Thomas & Friends: Season 19 aired in the UK, and My Little Pony Friendship is Magic: Season 5 aired on the Hub Network.