The story unfolds in the perfectly pristine town of Normsville, home to the squeaky-clean Norman Normal. When a mysterious wave of slime sweeps the city and unleashes monster mayhem, Norman’s own spooky secret is suddenly exposed. Expelled from Normsville, Norman plunges down the "rubbish chute of doom" into Monster Street. There, he meets a weird and wonderful cast of freaky friends—including talking burger buns and a fabulous dustbin-dwelling diva. Together, they must band together as The Grossbusters to plunge into a slime-filled adventure, save the city, and prove that being different isn't dangerous, it’s dazzling.