999: Killer On The Line (2016)

S1E37 Heavy Metal Shaun

To celebrate his birthday, the farmer hosts a themed costume party. Unfortunately, Bitzer misplaces all the invitations, leaving the event in jeopardy. Once again, Shaun comes to the rescue. The sheep cleverly don their own creative disguises to take the place of the guests and throw a lively bash. But will they be able to convince the farmer that he’s surrounded by his actual friends?