When a mysterious green gas crisis breaks wind, the Global Air Group (GAG) offers a million-dollar prize to the first person to discover the cause. Julius Caesar Brown dreams of winning the cash so he can pay off Jake the Snake, the blackmailing bully who threatens to ruin his chances with the cutest girl in fifth grade. But Julius can barely pass a math test, let alone solve an international scientific mystery. What he needs is money. Fast. His mom volunteers him to help the Zombie Lady. Yeah. The crazy woman down the street who every kid knows eats boys’ brains. But Miss Crabtree’s no zombie. And winning the million-dollar prize may not be as far-fetched as Julius once thought.