When Steve Moran, Mr Griffs' troublesome neighbour, throws a lavish party, everyone in the neighbourhood is invited. Everyone, that is, except for Mr Griffs.
Although he has no intention of attending Steve's pretentious party, Mr Griffs' curiosity gets the better of him. After coming to the aid of a party-bound and cake-bearing old lady, Mr Griffs gallantly offers to escort her (and her cake) inside. Within no time at all, Mr Griffs finds himself sipping champagne and sampling Steve's expensive canapés.
All at once, Steve's carefully-laid-out plans unravel and, no matter how much he tries, he just can't keep Mr Griffs away. When all of his friends, and even his wife, begin to flock around his neighbour, Steve is left to wonder who, in fact, is the unwanted guest?
'I love a cake. And this one's got the perfect amount of cream!' Mr Griffs salivated over the dessert. Although he considered sneaking a piece, he realised that the only way to get a bite would be to infiltrate the party.