Dr Chris escapes the Bondi clinic this episode to travel to the central coast of NSW to do vet checks at the Australian Reptile Park. His first patient Blackie is a very important Tasmanian Devil. She is one of the insurance colony that has been shipped over to the mainland to prevent the devils being wiped out by a shocking facial tumour epidemic. Blackie is having trouble having more babies and Dr Chris needs to find out why. He discovers an infected nipple, which at first glance looks suspiciously like cancer. While at the Reptile Park, Chris also treats one of his least favourite patients - an enormous Burmese python called Queen Bee. The majestic reptile has an infected tooth but she puts up a fight against the vet's well meaning advances. Meanwhile over at SASH, Dr Lisa treats a much loved cat ; Lucky - who has paracetamol poisoning. An antidote is needed immediately. Dr Chris also tackles a tricky rescue mission to try to save a mother and her three ducklings.