When the master of Porterhouse College, Cambridge dies of a Porterhouse blue, a stroke brought on by excessive living, the new Master of Porterhouse threatens a break with tradition in the most conservative college.

Lionel is in trouble, he has left Skullion for dead and is obsessed with Mrs Biggs.

John Sessions finds a novel, if inflammatory way of disposing of a gross of contraceptives while Porterhouse college porter David Jason has some revelations. Adult content with some nudity

The Dean and Sir Cathcart D'Eath enlist a journalist's help to end the new Master's regime.