Every kid gets into some kind of trouble, and that’s no different for the kids of Morningside: Billy, Max, Jen, Hannah and Johnny. Then there’s Britt: She never gets in trouble. In fact, she’s convinced her parents to drive everyone tomorrow to the brand new MegaJumper 3000 at Captain Happy’s Jumpy-Fun-Super-Bouncy Indoor Place.

Jen and Hannah, her two best friends, fight over who will sit next to Britt. They press her to decide who’s her number one bestest best friend, because no one can like everything the same. Jen and Hannah each offer Britt a piece of gum as a test. Britt makes peace by taking both pieces, and chews a huge wad of gum.

The next morning she wakes up with a huge pink wad in her beautiful red hair. She fears catastrophe: that her parents will cancel the Captain Happy’s outing if they find out she didn’t listen to them when they told her not to go to bed while chewing gum.

Hannah and the boys each arrive one by one and try to use his or her mischievous skills to find a solution. Nothing works. Britt decides to take a desperate measure: she learns from one of Billy’s science books that canola oil will get gum out of anyone’s hair, so she will trek all the way down the street to Foodarama to buy some.

Though she doesn’t want her friends to get into trouble, they head out on the adventure with her. When Johnny admits no one brought any money with them, Jen comes up with a brilliant plan: She steals her charity box. After all, she saved her extra change for people in need, and Jen NEEDS to be with her best friend – especially since Hannah has been with Britt all this time.

She asks Britt if she’s now her number one bestest best friend instead of Hannah, but before Britt can answer, she discovers the box won’t open. Britt decides to climb all the way to the top of a slide and hurl the box to the ground.

Good news: they have the money. Bad news: the ice cream truck arrives. All of Britt’s friends want to get a cone, using their newly rescued money. She gives back the “stupid” box, shocking everyone that she used the “S” word.  Everyone wants to go home, so Britt makes the most rash move ever: She cuts the gum out of her hair! Worse, she says they don’t need her parents to drive. They walked this far; they can walk to Captain Happy’s. That’s the last straw.  Her friends decide to go home, because it’s the right thing to do – which Max refers to as being a “Leader of Good.”

Britt, alone, lashes out that she can do this alone, but then weighs the good vs. bad of her situation. She comes to a heartfelt conclusion: Today, for the first time ever, she relied on her friends. They would want her to do what’s right.  She’ll go home, too.

Too late: her mom finds her and grounds her.  How can she ever make it up to them? She scours her room to find items to donate to charity. Her parents admire her ingenuity, and encourage her to ask her friends to help. Britt apologizes to everyone. They forgive her: it was a whole five days ago.  Even better, Jen and Hannah tell her that they’ll both be Britt’s best friends. 

Britt confesses she can’t – and most likely won’t – be all good all the time, but vows she will always try to find a way to make up for whatever she did. She then leads everyone to the charity place – which happens to be right next to Captain Happy’s!  After all, she’s the gum that keeps everyone sticking together.