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.

Kirby's replacement is not what the Troop had in mind. Meanwhile, Candace and Hayley have a fight over telling Candace her secret and Candace's brother comes to visit.

After Phoebe unwittingly "adopts" a baby Dragon and Jake and the Troop must figure out how to return it before the mother dragon finds them first.

Jake and two other students attempt to stay overnight in an abandoned hospital rumored to be haunted by a Wraith.

A Harvard-educated sponge named Dr. Cranius (voiced by Kelsey Grammer) is captured by The Troop. He then tries to manipulate the members so he can escape.

While saving a Senior Dance from a Mongolian death worm, Jake learns not to judge a book by its cover, and Felix becomes an unlikely hero.

A Flaying Pincer Mole has been attacking the school repeatedly and the only way to find its lair is to team up with the Sniffer... an incredibly annoying monster.

Jake is initiated into The Troop, a group that protects the town from alien monsters. His first mission is to help his mean neighbors, who have been turned to stone.

In the previous episode Jake broke open the portal to bring Candace to the Monster World. But, this releases Monsters into the real world. Now, Jake must go into the real world to retrieve the troop grid.

Jake is pregnant with a baby Snark, which makes his neck look weird. A griffin is harassing local ranchers and Haley and Felix have to take it out.

When Haley and Felix are scratched by a Zylork, its venom makes them want to be eaten by the monster and Jake must save his friends from themselves.

Kirby comes to takes Felix's place and must take down a monster who is taking over the mind of video-gamers.

A monster switches places with Hayley and realizes it easier to be a monster then a teenage girl. Kirby gets trained hard to become a good member of the Troop.

Jake and Felix must infiltrate Hayley's cheerleader slumber party in order to find out which girl is hosting a bug alien. Also, Stockey is nervous about attending his Troop class reunion.

Mr. Stockley is the acting Principal at school and wants to the day to go perfectly to show off what he can do, but when an Oculypse escapes from HQ havoc is wreaked on the student body.

Candace is attacked by a monster that sucks people into mirrors. So Hayley and Kirby must stop it before it attacks anyone else. Meanwhile, Jake tries to get his comic approved by Stanley Lee.

Kirby enters the science fair and so does his rival from hos old troop who uses a monster for her project which is a robot that attacks the school. Meanwhile, Jake and Hayley battle for concert tickets.

Cadence and her friends accidentally release a deactivated Doom Hound.

Cecilia, an Eris Fairy sister (Daniella Monet) arrives and mistakens Etienne for Felix and they become a couple. Cecilia's ex-boyfriend, Tod comes from the monster world to get her back and get rid of Etienne. Meanwhile, Jake wants to ask Hayley go to the dance with him.

A tree monster takes the form of a student in order to kill the student council. Also, Felix is forced into a situation where he must protect a boy that has wronged him in the past.

When a group of part vampire/ part Hamster/ part Human monsters invade Lakewood, Jake must go undercover to infiltrate the group in order to find their lair.

Cadence sees an opportunity to prove her worth when The Troop is attacked by an ice monster.

While fighting a gelatinous cube monster, Haley and Jake accidently switch bodies.

When a veteran Troop member named Bianca Stonehouse replaces Mr. Stockley due to his dentist appointment, The Troop discover that she is a monster in disguise, there to help another monster escape and to find the real Bianca Stonehouse before its too late.

Felix's new friendship with Gus creates a rift within The Troop. Little does anyone know of Gus's secret plans to destroy The Troop.