Golden retriever poodle-cross Suki's front legs have developed abnormally and now require urgent attention as the bones of her forearms are growing at different rates, so Noel decides that major surgery is required. Beloved elderly Labrador Raffa is nearly 11 and has become lame with constant pain in his front legs, and Noel discovers cartilage erosion in both elbows. Meanwhile, five-year-old dachshund Zizi is rushed in after suddenly losing the use of her back legs overnight, and an urgent MRI scan confirms that Zizi has suffered an exploded disc.