Lottie is volunteering at Branksea Animal Shelter, helping to look after the homeless cats and dogs.
One day a cardboard box is mysteriously left outside the front door with a hungry and frightened Persian cat inside.
They decide to name her Pandora.
Unlike the Greek myth, where a box brought unhappiness, here the arrival of Pandora is a cause for joy and fresh hope.
Lottie helps to nurse Pandora back to health and make sure that her furry coat is kept clean and fluffy.