When Great-Uncle Horace brings back lost and homeless animals from his travels around the globe, it falls to Zoe and her mum to settle them into their new home at the Rescue Zoo. Zoe's good at this, because she can understand what animals say and talk to them too. But that's a secret! In this first book, there's a new arrival at the zoo: Rory, a tiny lion cub. Rory misses being around other lions, and he's been sick ever since he was separated from his family. No one knows what to do, but Zoe has a bold plan to introduce Rory to Leonard, the grumpiest, growliest lion in the zoo. Will the two lions end up being fast friends, or will this be a roaring disaster?