Disney has released a promo for the upcoming Pixar Toy Story short, “Toy Story That Time Forgot”. This half hour special finds Woody, Buzz, and the toys lost in uncharted territory when the coolest set of action figures ever turn out to be dangerously delusional. It’s up to Trixie the Triceratops to help the toys return to Bonnie’s room.

Also, below is the original trailer:

The special, which introduces us to Battlesaurs, took three years to get made, with two spent of developing the story. It is the second Toy Story short that has been made since the trilogy was completed, the first being the Halloween special Toy Story of Terror. The short will have all original voice actors return, including some new ones. We get Tom Hanks as Woody, Tim Allen as Buzz Lightyear, Kristen Schaal as Trixie, Wallace Shawn as Rex, Timothy Dalton as Mr. Pricklepants, Don Rickles as Mr. Potato Head, and Joan Cusack as Jessie, with Kevin McKidd joining as a new character, Reptillus Maximus.

Toy Story is a franchise which began in 1995 with the original Toy Story film, and has since grown into a trilogy, an animated series, multiple video games, television specials, short films, plays, and a couple direct to video movies. The three core films of the trilogy have grossed more than $1.9 billion, with each setting box office records. The trilogy is considered possibly the greatest trilogy of all time, with each film being magnificent in it’s own right, and the third possibly being the best of the three.

Toy Story 4 was announced earlier this month, with Director John Lasseter saying “Toy Story 3 ended Woody and Buzz’s story with Andy so perfectly that for a long time, we never even talked about doing another Toy Story movie. But when Andrew, Pete, Lee and I came up with this new idea, I just could not stop thinking about it. It was so exciting to me, I knew we had to make this movie—and I wanted to direct it myself.”

Toy Story That Time Forgot will air on ABC December 2.

Read more: The Toy Box: Orbitwheels Fails to Make It to Round 2