Brother and sister Milo and Ella reveal what happened when their dad bought their very own zoo when it was threatened with closure. The children show us what it's like to have cheetahs and jaguars as pets, and how to persuade a raccoon to move house! We also follow the family's trip to Portugal where they track wolves and scour the sanctuaries in the hope of finding a mate for their own wolf back home. But life at the zoo isn't always easy as the children find out when one of their favourite animals falls ill.