Hollywood, struggling martial arts actor Johnny Cage searches for his missing co-star amidst a Los Angeles filled with bloodthirsty fighters.

When the Justice League goes missing and villains overrun Metropolis, there’s only one team that can solve this mystery: Scooby-Doo and the gang! But wait, there’s a new dog in…

An evil sorceress transports the gang back to the age of chivalrous knights, spell-casting wizards, and fire-breathing dragons.