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Arnold Armstrong, formerly the superhero Captain Fantastic, faces an unexpected career change after losing his superpowers in a final epic showdown with Dr. Superior; he’s now tasked with guiding a special group of 6 kids through superhero training and the challenges of kindergarten.

A fieldtrip to the Greenville Museum of Art is interrupted by a critical mission: work as a team to save the museum's most precious painting from two clever art thieves.

Hammy, the new class pet and mascot, teaches the kids about taking care of a pet — and the kind of trouble a hungry super-powered hamster can cause!

The Super K's meet their arch-nemeses, the Fearsome Foursome, and learn about the importance of perseverance.

A superhero lesson on creative thinking leads Billy to question what it means to be a monster.

Dueling sleepovers and pranks lead to a lesson on overcoming your fears — real or imagined.

Billy and Jackson get into a tricky situation when Nigel Danforth hatches a plan to get his evil superpowers back.

When Mr. Arnold falls asleep in class, the kids take on an important mission without him that they're not quite ready for.

Stranded! The Super K’s accidentally took off in a hot air balloon without Mr. Arnold and crashed onto a deserted island. If they want to make it out of there, they have to band together to find food, water, shelter, and — hey, what are those mysterious footprints?

The Super K's must stop Nigel Danforth and his Fearsome Foursome from canceling Christmas forever.

The Super K's must stop Nigel Danforth and his Fearsome Foursome from canceling Christmas forever.

A trip to the Greenville Science Museum leads to an out of this world adventure.

The Super K's are doing horrible, no good, super bad things all over Greenville, but… is it really them? When Nigel Danforth is involved, all bets are off!

When Mr. Arnold misses class to attend a Retired Superhero meeting, the new substitute teaches the Super K's a lesson on trusting their instincts.

When Captain Fantastic is inducted into the Super Hero Hall of Fame, Nigel Danforth decides to do everything he can to disrupt the main event.

Vik's quest to find Bessie the lake monster teaches everyone that just because you can't see something doesn't mean it isn't real.

A trip to meet Mr. Arnold's friends Penn and Teller leads to a magical mystery that only the Super K's can solve: what happened to Houdini's Ring?

The Super K's accidental trip through time teaches everyone that history is best left in the past.

Mr. Arnold's special guest, Arnold Schwarzenegger, has an epic chess match against Natasha Badinski.

Mr. Arnold and the Super K's are teleported to an alternate world where everything is opposite!

A Super K royal visit with Princess Zamunda turns chaotic when her priceless tiara goes missing.

A geography lesson and a story about Mr. Arnold's long lost love leads to an adventure in Paris to save the city from the dastardly Joan of Dark.

When Patty, Billy, and Vik are abducted by aliens, Mr. Arnold and the rest of the Super Ks must race to save them from the most dangerous talent show in the universe.

The mysterious origin of Captain Fantastic and his rivalry with Dr. Superior is finally revealed.

The Super Ks take a trip to Austria with Mr. Arnold to solve the mystery of the missing mini horse.

A new exchange student from England teaches the Super Ks that appreciating each other's differences can save the day.