1x1 - Several Leagues Under the Sea
After Flapjack brags about Bubbie's speed, he ends up involving himself, K'nuckles, and Bubbie in a race through the Sea of Teeth against an evil inventor and his mechanical Alpha-Whale.
1x2 - Eye Sea You
While doing their laundry K'nuckles and Flapjack decide to spy on Bubbie, to find out what she does all day.
1x3 - Kid Nickels
K'nuckles bets Flapjack in a poker game, resulting in the two having a falling-out. K'nuckles replaces Flapjack with a young boy named Kid Nickels, while Flapjack becomes a banker's apprentice. K'nuckles ends up missing Flapjack and challenges the banker to win him back.
1x4 - The Sweet Life
Flapjack and K'nuckles befriend the richest lady in Stormalong, Lady Nickelbottoms, to steal from her mansion (which is made from candy). When their plans go awry, K'nuckles finds himself challenging Lord Nickelbottoms in a candy-based duel to the death.
1x5 - Several Leagues Above the Sea
The evil inventor's twin brother builds a "Grand Flying Contraption" to impress Bubbie, on whom he has a crush. However, when Bubbie does not return the same feelings (she sees him as a friend, rather than a love interest) he becomes very sad. Because of this, Flapjack and crew are inadvertently led into danger.
1x6 - That's a Wrap
In a scheme to trade wrappers with Peppermint Larry in exchange for candy, K'nuckles and Flapjack search for a "+" because Peppermint Larry says he will give them 100 pieces of candy in exchange for it.
1x7 - Cammie Island
Captain K'nuckles and Flapjack stow away on a ship that they believe will take them to Candied Island. Instead, they end up on the mysterious Cammie Island; Flapjack befriends the misunderstood (and lonely) monster of the island.
1x8 - Shave and a Haircut, Two Friends
When Captain K'nuckles believes he has found a map to Candied Island, he wants Flapjack to read it to reach their destination. However, Flapjack (in dire need of a haircut) cannot. They go to Doctor Barber for a haircut, only to find that the barber has stolen the map.
1x9 - Skooled
When Flapjack thinks he's unable to tell directions, he and K'nuckles decide to go to school. But K'nuckles finds himself unable to keep up with the other students and later plans to steal the candy rewards that the teacher gives out. However, he finds out something strange about the school.
1x10 - Snarked!
When they assume that Bubbie has been kidnapped by a group of foreign sailors known as the Snarks, Flapjack and K'nuckles sneak aboard their ship to locate her.
1x11 - Foot Burn
Flapjack and Captain K'nuckles suffer from a severe case of foot burn (sunburned feet) after sleeping in the sun. On their quest to treat it, they discover a hideous trolley driver whom K'nuckles knew from his past.
1x12 - Hand It Over
Captain K'nuckles is accused by a pirate captain of stealing his hand, leading Flapjack to believe that K'nuckles is nothing but a liar. This puts a strain on their friendship, causing everyone else believes that K'nuckles stole from them.
1x13 - How the West Was Fun!
For Flapjack's birthday K'nuckles, Bubbie, and Flapjack sail west in search of Candied Island.
1x14 - K'nuckles Is a Filthy Rat
Flapjack adopts a rat he rescues from a flood and names it K'nuckles II, but his new pet ends up infecting everyone in Stormalong with the plague.
1x15 - Sittin' Muscle
Flapjack, Captain K'nuckles, and Bubbie journey to the Bottom of the World to reclaim K'nuckles' long-lost "sittin' muscle" (his buttocks).
1x16 - Knot Funny
When Captain K'nuckles believes he has accidentally cursed Flapjack with the inability to speak he tries to find a cure, only to discover it to be a ruse by Flapjack to attend the local Knot Festival.
1x17 - Lookin' for Love in All the Wrong Barrels
After relating a tale that reveals why he doesn't trust women Captain K'nuckles ends up falling in love with his own reflection, believing it to be a beautiful woman.
1x18 - Beard Buddies
When Peppermint Larry hosts his annual Adventure Beard-Off Contest Captain K'nuckles enters the contest, with Flapjack pretending to be his beard.
1x19 - Pun Times with Punsie McKale
Flapjack finds out Peppermint Larry is preparing for the Stormalong Pun-Off, in which he will compete against comedy legend Punsie McKale. After Flapjack and Larry are knocked out by Punsie's puns, K'nuckles steals the show.
1x20 - Balance
Flapjack learns to balance a board on the waves (surfing) and becomes Stormalong's biggest film star.
2x1 - Jar She Blows!
Captain K'nuckles accidentally gets Flapjack stuck in a jar when trying to get some Candied Island candy. This leads Flapjack on a long journey in an attempt to return home, after being washed out to sea.
2x2 - Behind the Curtain
Flapjack and Captain K'nuckles struggle to escape from the Dock Hag's house after a feeble attempt at sabotaging K'nuckles' dock tickets, only to discover that the Dock Hag has a crush on the old captain.
2x3 - SHUT iT
After an argument involving Bubbie's tooth door, Flapjack and Captain K'nuckles decide to disguise themselves as each other for the day to see whose life is more difficult.
2x4 - Who's Moochin' Who?
When the Dock Hag bans Flapjack and K'nuckles from setting foot on the main harbor until they pay off their tickets, they take in a rich stranger in the hope he will pay them for being such kind friends. However, they rethink their idea when the stranger begins to take advantage of their hospitality.
2x5 - Over the Moon
When Flapjack and Captain K'nuckles are stranded on the moon after getting chased by Eight-Armed Willy, they discover that it could lead them to Candied Island. All they need to do is trick the moon (who, they discovered, has a mind of its own) into taking them there.
2x6 - 100 Percensus
Captain K'nuckles refuses to take a census conducted by Flapjack, due to a misunderstanding. Unfortunately, the census takers who assigned this duty to Flapjack are actually a group of pirates wanting to take over Stormalong.
2x7 - Off With His Hat
When Flapjack helps Captain K'nuckles look for his lost hat on an island filled with chimpanzees, they end up encountering a researcher living among them. With her help, they must reach the "secret meeting place": an active volcano whose crater K'nuckles must cross so he can get his hat back.
2x8 - K'nuckles and His Hilarious Problem
Flapjack tries to break Captain K'nuckles' candy addiction after he develops a severe case of "candy rot".
2x9 - Fancy Pants
K'nuckles needs to get fancy pants to get into the new VIP section of the Candy Barrel.
2x10 - Cuddle Trouble
Flapjack finds he may have a problem with cuddling after a night sleeping outside, so he tries to find the cause and a cure.
2x11 - Who's That Man in the Mirror?
When K'nuckles refuses to lose weight, he risks losing Flapjack to a real adventurer.
2x12 - Unhappy Endings
Tired of stories with happy endings K'nuckles and Flapjack go off in search of a story without one, but their imaginations quickly run wild.
2x13 - S.S. K'nuckies
Bubbie becomes jealous of K'nuckles' new boat, while unbeknownst to the trio, the boat's original owner seeks to kill Flapjack and K'nuckles.
2x14 - Candy Casanova
Flapjack keeps an eye on Candy Wife while Peppermint Larry is out of town, making Captain K'nuckles jealous.
2x15 - Down with the Ship
K'nuckles tries to prove he's a captain by visiting a sunken ship to collect his captain's papers.
2x16 - Willy! (Or Won't He?)
Flapjack has to capture Eight-Armed Willy to prove he is worthy of being a real adventurer.
2x17 - Bubbie's Tummy Ache
When Bubbie gets a stomach ache, Flapjack must go on a dangerous journey into her stomach to fix it.
2x18 - Mind the Store, Don't Look in the Drawer
Dr. Barber leaves Flapjack and K'nuckles to look after his barbershop/clinic with one important rule: they must not open a drawer. As a result, they are very curious about what is in the drawer.
2x19 - Please Retire
K'nuckles and Flapjack visit a storytelling club, where K'nuckles finds out that his own stories may be outdated.
2x20 - Under the Sea Monster
When Flapjack pulls a sea monster-related prank on K'nuckles the citizens of Stormalong banish him from the harbor by throwing him into the ocean, leaving Flapjack to try to get him back.
3x1 - Careful What You Fish For
When Peppermint Larry falls sick, Flapjack and K'nuckles are forced to go fishing for food.
3x2 - Mayor May Not
K'nuckles becomes the new mayor of Stormalong.
3x3 - I'm a Believer
When K'nuckles continues to trick people and blame ghosts, Flapjack consults Jayde, the resident ghost expert of Stormalong, to see if ghosts really do exist.
3x4 - Liar, Liar, You For Hire?
K'nuckles claims he knows where Candied Island is but gets caught up in his lie.
3x5 - Candy Colleague
Flapjack makes Doctor Barber a friend out of candy.
3x6 - These Boots Were Made For Walking (On Your Face)
K'nuckles gets a new face to avoid a mob after stealing boots but ends up caught in the mob.