A young worm discovers, day by day, that there are some very good and some not so good things about being a worm in this great big world.

Greg records his sixth grade experiences in a middle school where he and his best friend, Rowley, undersized weaklings amid boys who need to shave twice daily, hope just to survive, but when Rowley grows more popular, Greg must take drastic measures to save their friendship.

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.

Middle-school drama queen Nikki Maxwell worries about asking a boy to her school's "sweetheart dance."

The Heffley family road trip starts off full of promise, then quickly takes several wrong turns--with everything from a fender bender to crazed seagulls--but even the worst road trip can turn into an adventure, and this is one the Heffleys will not soon forget.

Fourteen-year-old Nikki Maxwell writes in her diary of her struggle to be popular at her exclusive new private school, then of finding her place after she gives up on being part of the elite group.

While under house arrest for one year for stealing a wallet, young Timothy keeps free-verse notes on his life in a court-ordered journal as he deals with having a sick brother and tries to stay out of trouble.

A famous author is coming to visit and Eva and her classmates are assigned to write a story--but Eva Wingdale is totally distracted because her pet bat, Baxter, has gone missing, and she suspects that the sneaky squirrels have something to do with her missing pet. When they learn that a famous author is coming to visit Treetopolis, Eva and her classmates are assigned to write stories to share with the author, but Eva is so worried about her missing...

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

Eva wants to be friends with Hailey, the new owl in her class, but when Hailey seems to prefer Lucy's company, Eva starts to feel left out, and even a little jealous of her best friend.