As Albert watches a horror film and Rodney complains about the lack of jobs in London, Del Boy has found another opportunity to earn some easy money by looking after Boycie and Marlene's dog, Duke, while they are away on holiday.
The Trotter brothers arrive at Boycie's house and meet Duke, a large Great Dane who eats steak, takes vitamin pills, and injures people when playing with them.
The Trotter brothers race back to the van and are relieved to see that Duke is still breathing, so they drive him to the vet.
Before the Trotters can leave for the vet, a doctor then shows them a bottle of pills given to him by one of the sisters and says that patients are not allowed to bring their own medicine into the hospital.
Del and Rodney decide not to tell Albert but are overcome by the temptation to do so as they find the situation too funny.