Jason loses Tall Girl's yearbook.
Jason's attempt at a new style leads to a bad haircut.
Eager to make some money of his own, Jason comes up with the idea of turning his home into a hotel while his mother is away at a retreat. With Ronnie's help, the hotel becomes a sought-after destination.
Tim reminds Jason that "Time flies when you're having fun" and this summer is just whizzing by. Jason starts to worry that the summer is going by too fast.
Tim's birthday approaches and he doesn't want a party – he wants to schmooze the Leader of the local chapter of the Nature Preservation Society, Nancy.
Jason looks back on the most pivotal summer of his life.
Tim takes over the neighborhood tradition of Night Games; Jason and Ronnie try to survive his tormenting rules, navigate a neighborhood fraught with obstacles and eventually stage a prison break.
Ronnie's tan is being affected by a new high-rise development in town that is blocking the sun, so all the kids decide to protest. But Tall Girl can't join in because the development is being spearheaded by her parents.
Jason lies about liking soccer to spend more time with Ronnie, but it quickly backfires when he ends up sacrificing his real passions for a fake one; Tim is so skilled at lying he lands an internship at a law firm.
Instead of buying Joanna a gift for her birthday, Jason suggests he and Ronnie work together to make her a movie; what Jason thinks is a cool activity for just the two of them starts to go off the rails.
Ronnie has decided not to enter the town's Annual Child Awards and has nominated Jason as his replacement. However, Jason lacks confidence and the requisite soccer skills to impress the judges.
Jason ventures out on a rainy day, navigating the elements and coming up against the Eye of the Storm itself, to find the legendary, flooded, Whitney Lane cul-de-sac.
After a soccer game, the parents decide to take the kids to Fun Zone - a new attraction in Sky Town.
Jason's newfound musical genius lands him the chore of playing music at the Retirement Home and Ronnie tags along. They meet an Old Man who resembles Jason in every way. Jason is in denial but eventually must confront life's greatest paradox.
A sleepless night causes Jason's thoughts to display themselves as "thought bubbles" above Jason's head that everyone can read.
When Jason and Ronnie visit the new Sky Town Mall, they discover their favorite drink, Soda With A Marble, has been discontinued. In order to find any remaining bottles, they are forced to navigate the Mall's new and sinister interactive app.
A summer school essay assignment from Best Teacher challenges Jason to explore and share who he truly is.
Jason writes a song that is a hit with everyone in the neighborhood. With Ronnie as his manager, he lands a gig at the Sky Town Amphitheater and Jason is thrilled.
During a camping trip to the beach with Cool Adult and The Tight Knits, Linda forces Jason and Joanna to get along, for the safety of everyone. But Jason goes increasingly bitter as everyone falls under the spell of Cool Adult.
After Tim impresses everyone with his nature skills, he quickly irritates when he won't shut up about it for the rest of the hike. But when Jason is the one who erupts at Tim, it becomes clear that both brothers have their good and bad nature.
In a flashback to one week before summer from Tim's point of view, Innocent Tim helps with party planning for evil Jason's birthday, but when Tim righteously tries to use the event to raise attention to the endangered Purple rock flower.
When Tall Girl gets a boyfriend, Tall Boy, everyone loves him except Jason, who, in an effort to keep his friend, goes to every means possible to get rid of the new kid.
When a good day turns into a bad one and then back to good, Jason calls out Mother Nature for what he sees as unfair treatment; but when Mother Nature gets upset with him, Jason gets a taste of what they have to deal with.
When Joanna has to stay over at Jason's house while her parents deal with some family issues, Jason must keep her family's troubles a secret, which is hard to do while she criticizes everything in his life.
When Linda takes Jason, Ronnie and Tim to see the musical, "Story of a Young Lady" Jason and Ronnie get their figurine stolen by the play's author and find themselves lost in the big city tracking the author's family down.
When Jason sees the Purple Rock Flower that Ronnie gave him, start to wilt, he becomes determined to save all purple rock flowers and decides to use his music to take up the cause that Tim has fought his entire life for.
When Ronnie is too busy with the soccer kids practicing for the big playoff game next week, Jason replaces the goalie for the opposing team.
Just as Jason is pressured to come up with more songs for his gig with a serious band, Ronnie's old best friend, Winter, returns to town from her country-wide dance tour and the two are inseparable.
After years of staying away from their old destructive ways, Jason and Ronnie get in trouble, forcing the neighborhood, and their parents, to consider separating them.
A world where Jason and Ronnie don't get to be friends.
When Jason and Ronnie, back to their old antics, dispose of Tim's beloved stamp collection, a hellish fight ensues.
With Tim headed for vacation, Jason and Ronnie can finally spend some uninterrupted time together, but when soccer and music get in the way their true priorities reveal themselves.
With the two last days of summer closing in, and nervous about their paths diverging, Jason and Ronnie both can't sleep and spend an endless night together.
Troubled by how anticlimactic he feels after completing every activity on his Summer to do list, Ronnie becomes bent on acquiring a baby as the ultimate way to fulfill one's purpose in life.
Everybody's final plans for the summer are squashed by a scorching heat wave as Mother Nature announces that she's closing the books on the summer.
In a flashback to the early days of summer, Jason and Ronnie can't get enough of their arts and craft teacher Jackie's delicious spaghetti.
Months before summer, Jason combats his inherent grin being misinterpreted by the world, while trying to direct the end-of-the-year party-slash-show, while Tim deals with his inherent frown.
When Jason and Ronnie have differing memories of an event, they go off in search of answers and to find out who is in charge of everything around here - but the answers are as complex as whomever is doing the remembering.
30 YEARS FROM NOW, the kids reunite for Joanna's birthday and decide to go play at the old neighborhood, but their soccer field has been taken over by new kids.
Older Jason and Ronnie decide to reminisce on Jason's hotel roof, but it's restricted.