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.

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

Keena Ford chronicles her many mishaps as she begins second grade.

A bandit is on the loose at 6th-grader Chase Cooper's school. As each day passes, the bandit's reach grows further and further.

When she accidentally leaves her journal in Tiffany's apartment, Keena is afraid that Tiffany will reveal all of her secrets.

Eva Wingdale and her owl classmates are on a camping trip to the other side of the forest, where one of the assignments is to make useful inventions--but Eva and Lucy become totally distracted by the legend of Nellie Wingdale, founder of Treetopolis and her buried treasure, and never finish their project.

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.

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.

Rainbow Tinseltail and the other students at Sparklegrove School for Unicorns are excited when a brand new unicorn, Sunny Huckleberry, enters the school, but Sunny does not know what his special magical power is, and the thought that he might not have any power at all is making him unhappy; Rainbow (whose power is granting wishes) is eager to help him--even though he does not seem to want her help.