After keeping a treat from his mother all to himself, Yuri goes on a pirate adventure and learns that it's more fun to share things with his friends. Lili's friends help her overcome her fear of heights during a mountain climb to a castle in the sky.

Matt is dead set against trying spinach, but he's left with no choice when he gets caught in a rapidly growing spinach jungle. Lili learns what forgiveness is all about after her friends put on a circus to make amends for accidentally ruining her face crayons.

Yuri wants to fly his new kite all by himself, but quickly realizes that sometimes you need the help of a few good friends - especially when you're trying to land a plane. After accidentally chipping a vase, Lili and Nessa have to sneak through their household museum to put it back before her parents find out, but quickly realize that honesty is always the best policy.

Watching his friends have a blast while losing at silly funhouse games, Matt realizes that you don't always have to be the best at something in order to have fun doing it. Upset at the news of moving away, Lili strands herself on a desert island, where a whale teaches her how to make new friends and a vigorous rescue mission teaches her that her old friends will always be there for her.

Nervous to talk about his artwork in class, Yuri leaps right into his own painting to hide, and winds up working through his fears as he guides his friends through the world he created. Lili gains a new appreciation for her glasses after she takes them off at her costume party and causes near disaster during her search for a prince.

Yuri is hesitant to learn French, but decides to give it a chance after a fantastical game of hide-and-seek in a place where you can only speak 'glerm'. Nervous that a barber won't be able to cut his hair the way he likes it, Matt and Bongo decide to never get their hair cut again and instead become hairy cave men.