Eddie, tired of show-off Courtney, comes up with a plan to lure her down to Muddy Creek and scare her with the rumors of creepy Mud Monsters, but he makes his first mistake when he refuses to believe the rumors himself.
Skipper Matthews sees a building in Riverview Falls that looks exactly like one from his comic book collection--the Masked Mutant's secret headquarters--and wonders if the evil supervillain could really live in his own home town.
Matt, determined to move out of his tiny bedroom, defies his mother and sneaks into the guest room to sleep, but he soon wishes he had listened to his mom when he wakes up in a different reality.
Kris, jealous of her sister Lindy's success as a ventriloquist, convinces her father to buy her a dummy of her own, but weird things start to happen after she reads the words inscribed on a piece of paper found in the dummy's shirt pocket.
Steve Boswell wants to have the scariest Halloween costume on the block. So he gets a mask from the same store that Carly Beth got hers, but now he is starting to feel so old, so tired, and so evil.
Jack Johnson finds a book that tells how humans can learn to fly and hopes to use his knowledge to show-up his classmate Wilson Schlame; but when the news gets out that Jack can fly, things start to get out of hand and he questions whether flying is really the way to go.
Billy Deep and his sister Sheena's summer on their uncle's floating lab in the Caribbean takes a dangerous turn when the fish begin growing to enormous-sized creatures with appetites to match.
