Emma's topsy-turvy summer led her to eagerly anticipate reuniting with friends Lily and Amelia for familiar activities.

However, when they meet before third grade begins, unexpected changes occur: Lily becomes a ballerina, Amelia loses interest in science, and they both enjoy hanging out with Emma's younger brother Little. Determined to restore their bond, Emma tries to impress them during the school bus ride. But as third grade unfolds, the differences keep coming. Will Emma's plans to fix her friendships work, or has she created another "dilEmma"?