This season Apple and Onion are finding adventure and new friends around every corner. With their boundless enthusiasm and wild imaginations, they'll have to defend their roof shack before it's overrun by vermin and brambles, protect their special booth at Pizza's Diner, and try to become one-hit-wonders so they'll never have to work a day in their lives again.

Apple runs for Mayor.

Apple and Onion get lost beneath their floorboards and must find a way out.

Onion's dad comes to the city to visit but thinks Apple is a bad influence on Onion.

Apple and Onion start taking workout lessons at the city gym in order to get strong enough to save each other's life.

Apple and Onion start a secret city parking lot to raise money for a new shower head.

Apple and Onion must get a fly out of their apartment or Falafel will kick them out.

Someone is stealing instruments from Ice Tea's music store, right under the nose of Chicken Nugget, who moonlights there as a security guard. Apple and Onion love the store so much that they volunteer to help catch the thief.

Falafel is arrested for a string of headset robberies. Apple and Onion feel so convinced of his innocence that they make repeated attempts to break him out of jail.

The duo make up a new dance, but Burger steals the credit when he gains fame doing the dance with one modification.

The duo become obsessed with reading an old book on display at the museum. But Chicken Nugget has to guard the book in order to get his police job back.

Apple and Onion a pair of childlike newcomers to the big city attempt to fit in to their new surroundings.

Apple and Onion have to prove that they're not selfish when they do their good deeds.

Apple and Onion must conquer their obsessions of sausages and a video game.

Apple and Onion need to find a dream to follow, so that their lives don't head nowhere.

Apple and Onion spend a day in Falafel's shoes and use their positive attitude to prove he shouldn't be so grumpy.

Apple needs to be tall so that he can be in love.

Apple and Onion must face their fears while trapped in a pet shop, so they can save French Fry from facing hers.

Apple and Onion's party plans are interrupted by a grumpy guest.

Apple tries to survive a weekend alone while taking care of Onion's plant.

With their 6 month friend anniversary approaching, Apple has to find a way not to lose his best friend.

Apple needs to acquire a lifetime supply of toilet paper to finish his modern art sculpture.

Apple and Onion must find a way to use Burger's trampoline without making him feel used.

Apple is put in charge of the Dollar Store for the very first time.

Apple and Onion try to spread cheer during a city-wide heatwave.

Apple and Onion need to join an exclusive club to see a rare whale.

Apple and Onion want to become this week's "Most Fun People".

Apple and Onion struggle to ride Gyranoid of the Future, the craziest roller coaster at the carnival.

Apple and Onion must remain legit enough to be in their favorite rapper's music video.

Apple helps Onion achieve his dream of competing on a baking show.

Apple and Onion are getting ready for a block party with all their friends, but a mischievous duck takes over their roof. When they are unable to get into the house because they're stuck with the duck, they try to outwit it before the cake they baked for the party melts and destroys their laptop, which holds the song they wrote for the party.

When Apple loses his shoe, Onion takes him on a guided bus tour to a shooting star show to have him wish for his shoe. But on the bus, Apple must learn to try and stay serious so they won't get kicked off the bus.

Apple and Onion invent a new game called bottle catch (tossing a water bottle back and forth). When Energy Bar hears about it, she steals the idea. In order to get everyone to buy the many water bottles they need to sell, they try to interest them in the bottles by having a bottle catch contest against Energy Bar and Whey.

Apple and Onion are banned from the premiere of their friend Hot Dog's new movie he's in: Robotot II, so they try many attempts to sneak in. Their plans involve hiding in Popcorn to get in the bathroom so they can get into the booth, using objects to fool Chicken Nugget (a police-guard), disguising themselves as dogs, and using dipping sauce.

Apple is challenged to a fight by a grumpy Cheesesteak after Apple yells at Lemondrop, so he and Onion go on a quest to find the source of Cheesesteak's grumpiness by using the clues for a "chain reaction". This quest starts from the hotel, then into a room, then into a kitchen, then into the sewers, then into another room, then into Edwards School.

When Burger and Hot Dog notice Onion has some pro basketball skills, they decide to ask if him and Apple would be interested to join their team for the big 4 on 4 tournament, they accept, but Onion starts to lose for the team when he finds the voices in his head keep throwing him off and making him nervous.

Apple and Onion desire to be on a balloon ride, they gather all the change they can but it's not enough. Desperate to get on the ride, they work to get tips from customers at the pizza place where Pizza works, they start to scare off customers, but then realize they need to do this by being polite to the customers.

Apple and Onion decide to show their landlord Falafel an amazing day when he starts to feel homesick and after getting him mad when they didn't listen to his warnings about the air conditioner, things don't go the way they intended however.

During a computer game-playing session, "perfect team" Apple and Onion find themselves with a new roommate pawing at their window: a cat. It loves to roost upon Apple's head, but seems to hate Onion because of his hair; causing tension between who spends more time with Apple.

Apple and Onion are seperately sent off to a new life in the city by their respective parents. Apple is to find an apartment that is ready for him through a map, while Onion has free housing waiting through his job at Fun Co. Upon making it to the city, the two find that what can go wrong will go wrong, and eventually find their journies intertwined.

Apple and Onion accidentally get invited to Hot Dog's party. The duo are excited, specifically Onion as he wants to get close with French Fry, but when Burger tries to dissuade them by saying it is a fancy party, they decide that they need to grow up which somehow lands them in jail.