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.

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.

The pressure's really piling up on Greg Heffley. His mom thinks video games are turning his brain to mush, so she wants her son to put down the controller and explore his creative side. As if that's not scary enough, Halloween's just around the corner and the frights are coming at Greg from every angle. When Greg discovers a bag of gummy worms, it sparks an idea. Can he get his mom off his back by making a movie... and will he become rich and famous...

When Eva hurts her wing, she visits the hospital and meets a new friend, Rocco, who has a broken leg--but wearing a sling for a week prevents her from writing in her diary, and she turns to her friends and family in order to keep it up to date.

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.

When Eva Wingdale sees something large and white flying above her she is convinced that it is a ghost, although most of the other owls just laugh at her--until something large and heavy and white lands on the school roof.

Twelve-year-old Iveliz is trying to manage her mental health and advocate for the help and understanding she deserves, but in the meantime her new friend calls her crazy and her abuela Mimi dismisses the therapy and medicine Iveliz needs to feel like herself.

Spirited, restless Gracie Lockwood, twelve, of Cliffden, Maine, living in a world where sasquatches, dragons, giants, and mermaids are common, keeps a diary of her family's journey in a used Winnebago as they seek The Extraordinary World in hopes of keeping her little brother, Sam, safe against all odds.

When an unexpected inheritance gives Greg Heffley's family a chance to make big changes to their house, they soon discover that renovations may not be worth the effort.

When no one signs up for the Battle of the Books, best friends Piper and Olivia create a promotional video that goes viral, which sets the girls up for too much exposure and not enough people reading.