While helping to set up a Santaland outside Walton Cottage Hospital, Mandy and James spot a stray Jack Russell terrier. They also befriend Charlie, a young patient, who desperately wants a dog for Christmas. Can they bring the two together?

All animals and animal lovers are welcome at the Animal Ark Veterinary Clinic. At Animal Ark, Mandy Hope helps her parents treat animals of all shapes and sizes. Even outside the clinic, Mandy can't resist helping any animal in need. Mandy and James are in this year's school holiday show. During the performance, Honey the hamster escapes from her cage. She's last seen scurrying out into the snow under a holly bush. Mandy knows Honey must be found...