Noel Fitzpatrick tries to save a tortoiseshell cat's leg by cutting out a tumour that has developed and replacing its knee with a unique bionic implant. Tibetan terrier Beau needs surgery for hip dysplasia. Staffordshire bull terrier Rosie is admitted as an emergency after her back legs suddenly collapse in the park, and Noel performs essential spinal surgery to the diseased discs in Rosie's spine and advises a course of intense physiotherapy.