Zoe named the kitten Pipsqueak, because she was so tiny, and promised to always take care of her. Then the kitten grew. And grew. Now she’s bigger than a horse - and talking as well! Fleeing into the woods to escape the curious eyes of the internet, Zoe and her best friend, Harrison, must keep the giant cat hidden as they desperately search for a way to return her to normal size. If they don’t succeed, Pipsqueak may never be safe again. But why did she grow so large in the first place? And what if trying to change her back leads to even greater danger?

Storm beasts and their guardians create perfect weather every day, and Mina longs for a storm beast of her own. But when the gentle girl bonds with a lightning beast - a creature of fire and chaos - everyone’s certain it’s a mistake. Everyone but Mina and the beast himself, Pixit. Quickly enrolled in lightning school, Mina struggles to master a guardian’s skills, and she discovers that her country's weather comes at a devastating cost - a cost powerful people wish to hide. Mina’s never been the type to speak out, but someone has to tell the truth.

Holly, a grey squirrel, and her animal friends have accepted that they will never be wizards’ familiars. Though they are each magical, their powers are so offbeat—Holly herself can conjure pastries (and only pastries)—that no professional magic-worker would choose any of them as a companion for noble quests. So instead of going on adventures, they languish at the Shelter for Rejected Familiars, where they are known as “shelterlings.”

The traditional Emperor's Journey is meant to be uneventful. But as the princesses Seika and Ji-Lin - twin sisters - travel to pay respects to their kingdom's dragon guardian, unexpected monsters appear, and tremors shake the earth. The Hidden Islands face unprecedented threats, and the old rituals are failing. With only their strength, ingenuity, and a flying lion to rely on, can the sisters find a new way to keep their people safe?

World War I stretches its cruel fingers across Europe, where five young people, each from different backgrounds and nations, face the terror of battle, the deprivations of hunger, and all the awful challenges of war.