During Ethan's kindergarten year, he encounters many new experiences both in and out of the school building. He's figured out the hot lunch routine and is working on writing his Bs and Ds, but Ethan finds the game of four square and the playground bully to be challenging. With the help of his third-grade cousin, Lucy and the supportive grownups at his school and at home, he continues to explore friendships, learn how to do new things, and deal with difficult classmates.