The Wild Kratts aren't too sure what to do for Halloween. Should they go trick or treating or just have a Halloween Party? The Kratt bros decide that the best thing to do is to discover some new "creepy cool" creatures. Heading off to find these new animals friends, Martin and Chris don't realize that Zach and the other villains have come up with a plan to ruin Halloween. Can the Wild Kratts defeat the villains and still get to celebrate Halloween? Science Concept: Features that may seem creepy are critical for an animal's survival.