The first full-length animated Scooby-Doo adventure reveals how Scooby-Doo and Shaggy became two of the world's most beloved crime busters, tracing back to where it all began when a young Scooby and Shaggy first met and teamed up with Velma, Daphne, and Fred to launch Mystery Incorporated.

Scoob!
In their most daunting escapade, Scooby and his companions delve into a puzzling scheme to unleash the ominous apparition Cerberus, while uncovering a shocking revelation about Scooby's future.