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 the moon's gravitational pull increases, causing massive natural disasters on earth, Miranda and her family struggle to survive in a world without cities or sunlight, and wonder if anyone else in still alive.

Abby's best friend Jessica is gone for several months, and nothing goes right. Abby is upset when her best friend Jessica goes away to spend several months with her dad. Abby promises Jessica she'll handle her baby-sitting job, but soon Abby gets fired. Will anything ever go right with Jessica away?

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.

Having recently discovered she is the sole heir to the throne of a tiny European principality, fourteen-year-old Manhattan resident Mia writes in her journal about her attempts to cope with this news, as well as with more typical teenage concerns.

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

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