When Heloise makes a machine to make herself more intelligent, Beezy accidentally becomes smarter instead.

When Heloise finds out Jimmy and Beezy had a secret list of "Guy Stuff" they won't let her see, she disguises herself as a boy named Herman to steal it - while Herman is actually Heloise's temperamental cousin.

Jimmy and Beezy leave Miseryville when they believe they've broken something valuable.

Miseryville is taken over by Zombie Pickles and it is up to Jimmy to save the town from disaster.

When Jimmy swallows an invention of Heloise's that causes bad luck, he accidentally brings misery everywhere he goes.

When Heloise creates a robot duplicate of herself as her assistant, Jimmy falls in love with it. Heloise becomes jealous and tries to get rid of the replica Schmeloise.

Jimmy and Beezy fall for a girl named Arianna. They have a competition to see which of them Arianna likes more.

When Lucius' deciding bird, Lovey, flies away, Jimmy, Beezy, and Heloise go out to find her so Lucius will give them his giant TV.

When Heloise receives a gift and a letter from J2S, she believes that it's from Jimmy but turns out it's from Peep, she then goes on a date with him when she finds out Jimmy's jealous.

Jimmy catches Heloise and Beezy sneaking off to enter a dance contest. After they tell him he can't dance with them he decides to enter by himself.

When Lucius is attacked by a horrifying monster, Beezy and Jimmy offer to help but Heloise believes she can do a better job. The three of them get into a fight to see who can be the best hero.

When a very special flower blooms, Lucius declares it is spring break in Miseryville and everyone is heading to Misery Island (the non- miserable side) to celebrate. Jimmy and Beezy take a rocket there but they end up on the other side of the island thinking it is the right side. Meanwhile, Heloise waits for Jimmy to arrive.

To steal a Mad Scientist's Award, Dr. Scientist makes Heloise sneeze off her own head.

Jimmy, Beezy, Heloise, and Lucius all pull pranks on the clowns that ultimately backfire.

Miseryville is holding a father-son race and Lucius wants to win but Beezy is lazy, so he lets Jimmy run in Beezy's place until Beezy gets mad at his dad's choice. Will the Heinous' win or will the weavils' win?

Jimmy gets a new pair of shoes, but soon finds he misses his old ones.

Jimmy is the only one in Miseryville that can't whistle, so he gets help from a pickpocket named Peep.

Jimmy can make anyone in Miseryville laugh except for a creepy man named Mr.Ten because Heloise stopped him from laughing again.

After Heloise builds a marvelous plane for Lucius, Jimmy sneaks on board with a dream to fly it.

When Beezy catches Heloise saving a panda (or what he thinks is saving) he and Jimmy decide to start a Heloise fan club for all the pandas who now adore her.

When Beezy sells all of Lucius's riches for Lemonade, it is up to Jimmy to help Lucius get rich again.

When Beezy hires a mule to be the star of his talent show, Jimmy becomes jealous and gets help from Heloise to sabotage the mule.

Heloise begins to act strangely when her aunt comes to visit.

After Lucius forbids Beezy from hanging out with Jimmy, he pranks his father by pretending to be friends with a Weavil.

Heloise has a romance novel about two characters who are like her and Jimmy, but when she finds out the last page is missing she goes on a quest to find the author.