Still moping months after being dumped by her Arizona boyfriend Leo, fifteen-year-old Stargirl, a home-schooled free spirit, writes "the world's longest letter" to Leo, describing her new life in Pennsylvania.

Everywhere Sara goes she brings along her journal where she jots notes, makes lists, draws pictures and maps, writes poems, and plans a big surprise for her friends.

In his first journal, middle schooler Rowley Jefferson, Greg Heffley's sidekick, records his experiences and misguided decision to write a biography of Greg, who, in his own mind, is destined to become rich and famous.

When Miss Know-It-All's inbox overflows with pleas for guidance, Nikki Maxwell, the school newspaper advice columnist, turns to her best friends for help.

As Nikki plans how she's going to spend her summer, things get more complicated after she starts hanging out with a visiting student.

Middle-schooler Greg Heffley nimbly sidesteps his father's attempts to change Greg's wimpy ways until his father threatens to send him to military school.

In the latest diary of middle-schooler Greg Heffley, he records his attempts to spend his summer vacation sensibly indoors playing video games and watching television, despite his mother's other ideas.

Fifth-grader Ava writes in her diary about her family, losing her best friend to a new girl, and adopting an injured, skittish, and very special cat.

Eva is planning a big sleepover for her "hatchday" celebration, but one of her friends, Sue, does not seem to want to attend--so Eva must find out what is bothering Sue, and help her get over her first-sleepover jitters.

Eva's class is putting on a play, Snowy White and the seven owlets, but Eva is a little disappointed when she is cast as the Magic Mirror (and Snowy White's understudy); the owl students are making all the sets, props, and costumes, and rehearsal is a little chaotic--but the play is going well until Snowy White hurts her leg and Eva has to fill in for real.