On a dark and mysterious night, Scooby-Doo and the gang find themselves involved in a spine-chilling adventure that takes them to Europe. When the famous monster hunter, Count Dracula, makes a desperate attempt to maintain his title as the king of monsters, he decides to turn Shaggy into a werewolf to participate in a monster race. The only way to break the curse is to win the race, and time is running out.
With the help of Scooby-Doo, Daphne, Velma, and Fred, Shaggy must confront his fears and discover his fierce side before it’s too late. The gang delves into a world filled with mythical creatures and Gothic landscapes, facing absurd traps and thrilling races, all while trying to help their friend and uncover the truth behind Dracula's evil plan.
Meanwhile, Shaggy struggles with his new identity, feeling more cowardly than ever. However, the friendship and loyalty of the gang drive him to find the courage he needs to break the curse. Amidst laughter, scares, and a touch of catchy music, the gang embarks on an unforgettable adventure that shows that friendship can overcome even the strangest and most terrifying curses. In the end, the secrets of monsters may not be so scary after all!