This early Seventies British comedy takes us through seven short stories based on the Seven Deadly Sins. This film is a montage of different styles, from Spike Milligan's mainly silent "Sloth", to the leering Harry H Corbett in "Lust".

Satan-worshiper Prince Prospero invites several dozen of the local nobility to his castle for protection against an oncoming plague, the Red Death. Prospero orders his guests to attend a masked ball and, amidst a general atmosphere of debauchery and depravity, notices the entry of a mysterious hooded stranger dressed all in red. Believing the figure to be his master, Satan, Prospero is horrified at the revelation of his true identity.