After finishing up their senior year of high school, the Scooby-Doo gang decide to travel in the Mystery Machine, seeking fun and adventure during what could possibly be their last summer break together.
Setelah menyelesaikan tahun SMA mereka, geng Scooby-Doo memutuskan untuk melakukan perjalanan di Mesin Misteri, mencari kesenangan dan petualangan selama masa liburan musim panas terakhir mereka.