Andrea Beaumont leaves her father to return to Gotham, rekindling an old romance with Bruce Wayne. At the same time, a mysterious figure begins to hunt down Gotham's criminals, wrongly implicating Batman in the murders. Now on the run from the law, Batman must find and stop the culprit, while also navigating his relationship with Andrea.
After going their separate ways, Scooby-Doo, Shaggy, Velma, Daphne, and Fred reunite to investigate the ghost of Moonscar the pirate on a haunted bayou island, but it turns out the swashbuckler's spirit isn't the only creepy character on the island. The sleuths also meet up with cat creatures and zombies... and it looks like for the first time in their lives, these ghouls might actually be real.
Driven by a dream of revenge against those who made her an outcast in Edo-period Japan, a young warrior cuts a bloody path toward her destiny.
