Soon after cleaning the Mystery Machine, the gang capture more monsters, including the Snow Ghost, the Creeper, and the Spooky Space Kook, who are the entire Withers family.
Fred decides to come out of retirement after seeing a news report, though Shaggy and Scooby begrudgingly refuse, saying that they've been constantly taken for granted in all their mysteries.
While enjoying the accommodations, a few zombies surprise Scooby and Shaggy, who make a run for it and hide in a cabinet, which ultimately leads to a cavern, complete with cat statues and monuments.
As filming continues, the gang meet Seaver, a stunt double for Fred, who has a monster truck version of the Mystery Machine.
As the sun goes down, Velma heads into the forest wearing night-vision goggles but runs away when she sees a cluster of cats' eyes.
After Velma tells the others to make a run for their lives, they see a harmless-looking beige kitten coming out of the bushes, startling Scooby.
The cats are attacked by the gang, disguised to resemble zombies, causing them to become scared and hide in one of the cave's holes.
The fourth werecat (who attacked the van and tried to set a fire in the mansion) is implied to be a real monster and remains at large.
Soon, the cats, now docile, enter the cave and dig a spot in the ground with Scooby's help, revealing another treasure chest.