After spending six months apart in Book Two, best friends Julie and Lydia are reunited at last! Julie has said good-bye to the mean girls, and Lydia is ready to apply her hard-earned friendship lessons to founding their own crew. But bad news interrupts their reunion: their friend Sukie's mother, ill for many years, has passed away. This shakes Lydia and Julie, who reevaluate their goals and decide to focus more on being supportive of the friends they have.