Aglaia and her older friend Bianca hate living in the city. So the two pack up their bags and move into the forest, where they build a house among the branches of an extraordinary tree. Aglaia and Bianca think up fun ways to pass the time, but soon they discover that life in a tree still has rules—and neighbors!

A grumpy old man, a flying dog, a talking cat, and meowing babies are just a few of the characters living in this unique tree, soon to become part of the funniest family around. Readers will fall in love with these distinctive characters and their wacky adventures, brought to life by Italy's most celebrated children's author.