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.

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.

For Flapjack's birthday K'nuckles, Bubbie, and Flapjack sail west in search of Candied Island.

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.

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.

When Peppermint Larry hosts his annual Adventure Beard-Off Contest Captain K'nuckles enters the contest, with Flapjack pretending to be his beard.

Believing K'nuckles to be a bad influence Bubbie tells Flapjack to stop following the pirate, but to lead him instead. Unfortunately, after taking the advice of an animal trainer Flapjack accidentally hypnotizes K'nuckles into believing he is a seal.

Bubbie falls in love with a whale named Harvey, who kidnaps Captain K'nuckles and Flapjack to work in his factory on Laundry Island – unknown to Bubbie, who thinks they are ignoring her.

After Flapjack finds a pair of legs adrift at sea, Captain K'nuckles uses them to terrorize the people of Stormalong Harbor. However, when a sea monster's torso comes to reclaim the legs a battle for ownership ensues.

Captain K'nuckles steals a mermaid queen's heart filled with wishes (in the form of candy) so he and Flapjack can go to Candied Island, but they quickly misuse the wishes and learn a terrible secret about the mermaid.

Flapjack is dubbed Captain K'nuckles' guardian angel by Bubbie but when Flapjack annoys him with constant protection, K'nuckles fakes his own death to have peace.

Taunted by a rich boy for being poor, Flapjack and Captain K'nuckles search for diamonds that the rich boy claims are in the sewers of Upper Stormalong Harbor.