Paul dons protective clothing to help with treatments on 11-week-old Humphrey, a Bedlington Terrier suffering from ringworm, which include medicated baths. As he helps with his treatments, his head is turned by the small pup, who is struggling to stop scratching himself. Elsewhere, he also joins head vet Shaun on the streets as he does his rounds treating dogs belonging to London's homeless people, and meets a six-month-old golden retriever that was found tied to a railing and is in need of some serious training.