On a day known to the dinosaurs as "Treasure Day", Bron becomes stuck in the Mysterious Beyond. This event urges the young Longneck Littlefoot to take his friends on a quest to the Fire Mountain to save his father. Along the way, they befriend a Flyer.
- Year: 2016
- Country: United States of America
- Genre: Animation, Adventure, Family
- Studio: Universal Animation Studios, Universal 1440 Entertainment, Universal Pictures
- Keyword: sequel, prehistory, dinosaur
- Director: Davis Doi, Tony Tupilano
- Cast: Felix Avitia, Anndi McAfee, Aria Noelle Curzon, Jeff Bennett, Rob Paulsen, Barry Bostwick