The Big Mouth kids get transported to a strange new world, along with their Monsters, and get pulled into a wild adventure and a race against time to find the Crystal Stars and stop a plan for world domination and hopefully find a way home.

"Stan, Kyle, Cartman, and Kenny, were finally seventh graders; practically adults, as far as they were concerned. Of course, they had only just started puberty, and were still blissfully unaware that they had yet to endure the most painfully awkward years of their lives, which would be accompanied by what are called Hormone Monsters."

After the Cherry incident, Andrew Glouberman and his family move to the faraway seaside town of Seymour's Bay, where he tries to get a fresh start with a confident fanfiction enthusiast named Tina Belcher.

After what happened between Nick and Andrew at the end of Season 3, Nick leaves for camp without his best friend but somehow ends up at Camp Campbell with Max, Nikki, Neil and the gang.

A Big Mouth crossover with Out There.

Even though the students are sad that Coach Steve was fire. They were curious of the new teacher that the principal introduced to them, yet, who would've thought that the new teacher knew both Jessi's and Nick's mothers, Shannon and Diane, and they have history?