Noah and Bentley thought their backyard was just a regular place to play—until they discovered it was home to a bunch of wild, wacky, and totally unpredictable monsters! From a burping beast with a peanut butter obsession to a sneezy creature that can blow over lawn chairs, these monsters are anything but normal.

Now, the brothers must figure out how to keep their hilarious new friends a secret while dealing with monster-sized messes, sneaky neighbors, and the biggest question of all—what happens when your backyard turns into the ultimate monster playground?