The show features the "Scooby Gang" as they finish their senior year of high school. Making plans to spend their last summer break as a team, they decide to travel in the Mystery Machine to seek enjoyment and adventure. Along the way, however, they encounter a slew of monsters and havoc, preventing them from finishing their journey.
- Frank Welker as Fred and Scooby-Doo
- Matthew Lillard as Shaggy
- Grey DeLisle as Daphne
- Kate Micucci as Velma
The series was announced alongside other reboots of animated classics, including The Tom and Jerry Show and Wabbit. Sam Register, who was promoted to president of Warner Bros. Animation and Warner Digital Series in April 2014, will be its supervising producer. The series will have a 22-minute running time.
A "sneak peek" of the series was published in the 2014 Comic-Con Special edition of TV Guide, where it was stated that it would take "a more playful tone" than its previous incarnation, Scooby-Doo! Mystery Incorporated. Series producer Zac Moncrief explained that it would be "a more comedic ensemble", and that the characters' relationships were written to parallel those of the original 1969 series, removing any romantic subplots. In addition, the character of Scooby-Doo will have limited dialogue, and as "a new twist," Fred will have modified the Mystery Machine to be equipped with numerous modern appliances. Most strikingly, the series will employ redesigned character models for the main cast (while retaining their original clothes). Moncrief described the overhaul as "simplistic, edgy design to match the comedic styling," with their retained attire as "what a hipster dresses like in their world." Be Cool, Scooby-Doo! announced in the 2015 Comic-Con of episodes.