Mike, Brad, and Sarah set out for a Halloween party and discover an ancient secret.

In Springfield, Illinois, ordinary iguanas have become invisible...and they're huge!

Ryan, Stephen, and Heather spend a lot of time in the swamp, searching for snakes. They usually find harmless garter snakes and grass snakes, and they always have a lot of fun. But today they will find something they never expected. Pythons are on the loose!

Jake and his friend discover that a special blend of fuel makes farm equipment come alive.

Freddie, Chipper, Darla, and Mr. Chewy are determined to find out what may be lurking in the pond near Freddie's house.

Melanie and Cameron Doyle go camping in the wild at Mount Shasta when they see the biggest bird in North America, the California Condor. These birds don't attack people, but this Condor WANTS to attack people.

Shelby Crusado has a sneaking suspicion: she thinks her teacher is a robot, but no one will believe her. Well, Shelby is wrong. Her teacher is much worse than a robot.

Chad and Michelle Prescott see something big. Something vicious. Something Purple with 41 teeth. They are seeing more and more of them and look very dangerous. They have to find a way to get rid of these ugly things. They get help from Rachel and Derek Baker, their new friends. Together, can they figure out a way to destroy or get rid of these terrible creatures?

It's big trouble for Freddie, Chipper, Darla, and Mr. Chewy when they discover an army of Dust Bunnies from outer space living beneath Freddie's bed!.