Johnny steals a rocket his sisters made to travel to the moon so he can write his report. Unexpectedly, he battles some moon monsters and rescues Canadian astronauts.

Johnny uses a gadget to travel into a movie, The Quickest and the Monkiest. But what happens when the gadget gets stuck and the movie has a bad ending?

Johnny's sisters invent a time rewinder that can go back up to 5 minutes and they use it to get Johnny in trouble. Infuriated, he tries multiple times to steal this, but he fails; eventually, he gets a similar one from Bling-Bling Boy.

Johnny becomes Johnny X again in order to take down Bling-Bling's latest evil invention, Repto-Slicer.

Johnny and Dukey try Susan and Mary's ultimate scooter and are wanted in the future.

Susan and Mary put a device on Dukey, making him respond to their every command. Now Johnny must stop Susan and Mary, and get his best friend back.

Johnny uses a device to free everyone of zits.

Johnny uses his game controller to control people, but Hugh gets his hands on it and begins affecting Johnny in the process.

Johnny accidentally shrinks himself and Dukey into a sub-atomic universe while shrinking his toys. Unexpectedly, its nature turns against him.

A kid at Susan and Mary's school becomes a villain named Brain Freezer. Now Johnny must stop this villain and unfreeze everyone he froze.

Johnny uses a device in Susan and Mary's lab to make it snow outside.

Johnny uses a bionic arm to magnify his arm strength to beat Sissy at dodge ball. However, it breaks after being exposed to cereal.

Eugene brings a living monster truck to the Test house, and it began to be enraged after Eugene kicked it because it didn't win Susan's heart. Now the truck wants to destroy the entire monster truck species. It's up to Johnny to figure out how to stop it.

Johnny brings Porkbelly's founders back to life in order to help with his report.

Johnny and Dukey shrink themselves, and end up in Mr. Black's stomach and brain to make him forget that the General told Mr. Black and Mr. White to spy on Susan and Mary to stop them from doing dangerous experiments.

Johnny and his family go on vacation to a dude ranch on Susan and Mary's choice, but it is invaded by an outlaw motorcycle club shortly after they arrive. With the help from Bling-Bling Boy and Gil, both whom have also been taken a trip to the ranch, the Tests resolve to stop the bikers from ruining their fun and take back their holiday.

Johnny goes to the Behemoth, the ultimate downhill ski resort. However, he has to find ways to go downhill since the ski captain doesn't let kids go.

It is a hot day and Johnny's family cannot seem to find a place where they can cool off and get wet. They go to Lake Pork-Ness, which is rumored to have a monster inhabitant. Susan and Mary believe that the idea is a total myth and try to prove there are no monsters in the lake.

Five evil villains who have been defeated previously by Johnny (Wacko, the Bee Keeper, Brain Freezer, Mr. Mittens and Albert the butler) team up and kidnap him. Now it's up to Susan, Mary, Dukey, Bling-Bling, Gil, and Bumper to save him.

Susan and Mary create Gil cyborgs to make Gil jealous but they try to eliminate Gil and anyone in their path. It's up to Johnny to stop them. Meanwhile, the girls keep Gil "safe" in a box in their lab.

Tim Burnout steals blueprints of the girls' original plan to alternate Dukey and uses it on his cat, Mr. Mittens. But he becomes evil and now it's up to Johnny and Dukey to stop him.

While on a class trip to the safari park with Dukey disguised as Johnny's dad, Johnny and Dukey decide to help animals get to their homeland in Africa.

While trying to figure out some cheat codes from his video game, Johnny accidentally brings Smash Badger to life.

The Bee Keeper steals all the candy in Porkbelly and it's up to Johnny, Dukey, and the girls to stop him.

To control Johnny's frequent bad behavior, the girls split his bad genes to make his genes 100% good. The bad gene later gets a life of its own, making two Johnnys, one nice and one evil.