See the Adorable Origins of Scooby Doo and Mystery Inc. in the Teaser Trailer For Scoob

Ever wonder what Scooby Doo and Shaggy were like before they joined Mystery Inc.? Well, wonder no longer, because in Warner Bros.' upcoming animated film Scoob, we're going to get a whole lot of answers about the beloved crime-solving gang.

In the first teaser for the movie, we'll see how Shaggy and Scooby ended up crossing paths with teen detectives Fred, Velma and Daphne, as well as how the newly formed group goes on to solve greatest mystery in the career of Mystery Inc: a plot to unleash the ghost dog Cerberus upon the world. Dun, dun, dunnn. Will they be able to stop the "dogpocalypse" before it destroys the world?

As you wait to find out, feel free to obsess over the star-studded cast in the meantime — Zac Efron as Fred; Will Forte as Shaggy; Gina Rodriguez as Velma; Amanda Seyfried as Daphne; Frank Welker as Scooby-Doo; Jason Isaacs as the infamous Dick Dastardly; and Mark Wahlberg as Blue Falcon. Check out the trailer above before the film hits theatres on May 15, 2020!