Greg Heffley tells about his summer vacation and his attempts to steer clear of trouble when he returns to middle school and tries to keep his older brother Rodrick from telling everyone about Greg's most humiliating experience of the summer.

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.

A Valentine's Day dance at Greg's middle school has turned his world upside down until an unexpected twist gives Greg a partner for the dance and leaves his best friend Rowley the odd man out.

Nikki's diary describes a frightful Halloween, on which she helps with her sister's ballet class party at the same time she is Brandon's date for their middle school Halloween dance, where she has promised to spend the evening with her two best friends.

When eighth-grader Cameron Boxer creates the Positive Action Group at school he intends it as a diversion to fool his parents, teachers, and sister into letting him continue to concentrate on his video-gaming--but before he knows it other kids are taking it seriously, and soon he finds himself president of the P.A.G., and involved in community service, so the boy who never cared about anything is now the center of everything, whether he likes it or...

Sixth-grader Ally excels at covering the fact that she cannot read, but at her seventh school in as many years she is challenged to admit she needs help.

Nikki tries to be a pet sitter, but realizes it's harder work than she thought.

When Rafe Khatchadorian enters middle school, he teams up with his best friend, "Leo the Silent," to create a game to make school more fun by trying to break every rule in the school's code of conduct.

It's Nikki's birthday, and it is up to her whether it is a blast or a bust.

"It's a frenemy showdown and Nikki Maxwell has the worst luck. Of all the schools she could have been assigned to for the student exchange week program, she's stuck at North Hampton Hills, her arch nemesis MacKenzie Hollister's new school. Even worse, there might just be someone at NHH who can out-MacKenzie MacKenzie! At least Nikki can write about every moment of drama in her diary, so readers won't miss a moment of it. Can the queen of dorks survive...