Jake and Hayley are crushing on each other, until a new girl (Cadence) comes in and breaks it up. Felix is invited to join D.O.R.K., an exclusive school for the super intelligent.
Felix becomes popular when it appears he won a fight with a school bully. Jake and Hayley attempt to track and capture a Blood Thrasher, a mysterious creature that is killing other monsters in the area.
Felix has been promoted to International HQ and Kirby Bancroft-Cadworth III (Matt Shively) has replaced him. Now the new Troop must figure out how monsters are using a popular video game to eat people.
When students start mysteriously disappearing, the Troop hunts down an elusive Reflecticor Luponis Monster. Comic book legend Lee Stanley comes to school to buy Jake's loosely autobiographical comic book.
While waiting for Kirby to join the Troop, after Felix got promoted to International HQ, Jake & Hayley try to train Etienne to be a temporary Troop member.
After banishing Cadence from the Human World, Jake must follow her into the Monster World in order to retrieve his portable TroopGrid device and close the open portal into the Monster World.
Kirby's lifelong nemesis and ex Troop mate, Morgan Grey, uses her access to monsters in helping her finally defeat Kirby at the National Young Inventors Expo. When she loses control of her creation, it sets out to destroy her, the Troop & Lakewood High.
A Flaying Pincer Mole has attacked the school repeatedly and the Troop's only way to unearth its secret lair is to team up with the Sniffer, a terribly annoying monster.
Cecilia, an Eris Fairy, comes to Lakewood on Valentine's Day in search of Felix so she can have a perfect Valentine's Day. She mistakes Etienne for Felix, and they have a perfect date but her ex-boyfriend threatens to ruin it.
A monster switches places with Hayley and finds out it's easier to be a monster than a teenage girl. Kirby's new combat trainer, "The Hammer," beats Kirby down until Kirby can stand up for himself.
After blowing up the science fair Etienne begins to act like a tough guy when he hangs around Cadence. Jake has to walk around with a Doom Hound disguised as a yappy dog.
A Flying Swamp Monster that feeds on electrical energy has come to Lakewood and is not only terrorizing the city but is also threatening Prom from happening.
Jake, Hayley and Mr. Stockley get an emergency distress signal while doing Driver's Ed. Mazie, a straight-A overzealous student, faces off with Kirby in the school election for the newly created position of "Green Czar."
The Ice Ghoul returns to Lakewood even more powerful than before. Hayley, Jake and Kirby must fight the creature before they themselves are infected and turned into ice zombies.
