A final exam sends George and Harold to the Doom Dome, where they must battle Melvin -- who's been injected with powerful nanobots -- in order to pass.

It's parents' weekend at Lake Summer Camp, and Krupp's eager to make amends with Harold and George ... or so he says.

The pressure's on Harold and George to tell the scariest campfire story ever. Perhaps their tale of an ill-fated frontier dentist will do the trick.

Despite being terrible at the job, Krupp wants to be the camp director again next summer. That's something Harold and George simply cannot abide.

Harold and George don't ask for much -- just a fun scavenger hunt that doesn't include doing Krupp's errands. Careful what you wish for, fellas.

After George and Harold work with Erica to create a new comic book hero, she springs off the page -- and plunges into real-life crime fighting.

George and Harold want Cash Networth to buy the camp and fire Krupp. But before he'll agree to pony up the dough, Cash has a small request of his own.

A fierce game of plot potato takes an unexpected twist when Melvin unleashes one of his most fiendish -- and carb-loaded -- creations yet.

It's a race against time as George and Harold try to get Mr. Krupp fired before he can have them expelled. But first: a faceoff with the Toot Fairy!

Eager to get the campers out of his hair, Krupp orders them to climb Plummet Peak, where a terrifying creature is rumored to reside.

The campers' splat-tastic game of paintball is rather rudely interrupted by a foul and formidable fiend known only as Camoflush.

George and Harold trick Melvin into turning their bus into a time machine so they can reroute their field trip and see what ancient Rome was really like.

George and Harold get revenge on their gym teacher by writing him into a ridiculous new comic. But the joke's on them when life imitates art.

The boys recruit kids to join the M.I.S.F.A.R.T.S. -- the Mega Incredible Search Force Adventure Rescue Team Squad -- and bring Mr. Krupp back to School.

A school dance sounds like fun -- but only if the boys can keep their music teacher from playing DJ and putting everyone to sleep.

Krupp's campers take on rich rivals in a hoity-toity boat race that also features a revenge-obsessed giant salamander. Paging Captain Underpants!

A T.P. prank gone wrong leads to clogged toilets -- and a fateful explosion -- that turns the boys' new French teacher into a mummy.

After Erica critiques their comic book, George and Harold create a brand-new character -- a vampire who sucks the joy out of everything.

The boys' latest comic inspires their jorts-wearing Spanish teacher to become a superhero with otherworldly powers.

Who knew a thawed-out dinosaur could read comics and pull pranks? Well, this one does -- and he's one of Harold and George's biggest fans.

Holy guacamole! George and Harold are so determined to win an avocado-growing contest that they accidentally turn their science teacher into a monster.

With fun in short supply, Harold and George persuade Krupp to dump the campers in the middle of the forest so they can learn to rough it.

The boys travel back in time to stop Mr. Krupp from becoming a bully, only to find that their plan has turned him into a ruthless businessman.

To get out of an epic assignment, George and Harold go back in time to the moment homework was invented to try and stop it before it starts.