S02E01
Johnny and Dukey must help a pathetic pirate, Nobeard, take down his powerful brother pirate, Blackbeard, and impress his father, Greybeard. Johnny goes back to the future to get his sisters' help.
S02E02
An evil toymaker named Wacko gives out robots to all the children of Porkbelly, which imprison them. The gang seeks assistance from the Turbo Toy Force.
S02E03
Johnny starts his own channel over a channel which only broadcast emergencies and tests. Later, the army needs the channel for a runaway plane.
S02E04
Eugene creates a device that turns himself, Johnny, and Dukey into young children, interfering with Johnny's video game showdown with Sissy.
S02E05
Johnny makes a theme park called Johnnyland in the backyard. However, Hugh demands the park be torn down, later stumbling into an unstable ride with Lila.
S02E06
Hugh's constant sayings of "no" begin to infuriate Johnny, so, with Susan and Mary's help, they make a new one. However, when the new dad gets exposed to the plutonium he got for Susan and Mary, things start to turn out ugly.
S02E07
Johnny is trying to have the perfect Saturday, but Sissy ruins it by trying to practice William Tell archery on Johnny. Johnny then uses Susan and Mary's Saturday Repeater machine to try again.
S02E08
Johnny, Dukey, and the sisters go to an ice cream factory, in order to get the recipe for mint chip ice cream which Johnny and Dukey can't stop eating.
S02E09
Dukey gets jealous when Johnny takes Repto-Slicer to school for pet day and not him. However, this lands him into danger of becoming a TV star.
S02E10
An accident in Eugene's lab leaves Johnny overweight like him. Johnny uses his weight to become a rapper and to get a video game that he wanted. However, karma is after him and ruins his experience.
S02E11
Johnny and Dukey must rescue Susan from Bling-Bling Boy in the forms of Johnny X and Super Pooch. Little do they know she doesn't want to be rescued, as Bling-Bling Boy has taken her on a cruise bot with a swimming pool, movie theater, anti-gravity chamber, video arcade, and her favorite restaurants among other luxuries.
S02E12
Johnny and Dukey catch rainy day boredom, and use one of the sisters' devices, thinking that it is an inter-dimensional travel machine, and go into a land known as Johnnia.
S02E13
Johnny makes 100 robot clones in order to do his chores for him, but the clones become defective soon after.
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.
Dukey keeps Johnny up all night with his pillow fights and Johnny goes to the sisters to get some sleep. But Johnny misfires and causes his parents to go sleepwalking.