“This delightful, imaginative story…is action-packed and loads of fun.” — (Editor’s Pick) Booklife

“Ness adds emotional depth with…memorable characters, heart, and humor.” — Kirkus Reviews

“Rolo became so real to me… I loved every character.” — Online Book Club

The cats have overthrown the hoomans! Rolo hopes to find his hooman ancestors when he lands on his ancient homeworld, Earth. But instead, the aloof feline bureaucats throw him in the pound. He escapes and hides on an airship, where he meets Ailey, a quirky girl with a troubled past. She offers to help Rolo find his people in the lost city of Zorx if he helps her run away. But bounty hunters are on their tail — a cranky hairless cat and foolishly philosophical apes. With help from a one-eyed alley cat and a fortune-teller elephant, Rolo and Ailey must find where they truly belong in this catopia — a world where all animals are equal, but cats are more equal than others. A smart, hilarious, and genuinely touching tale of runaways, resilience, and family. And cats.

Age 8+. Series may be read in any order.