The continuing misadventures of Duncan Waring (Robin Nedwell), Dick Stuart-Clark (Geoffrey Davies) and Paul Collier (George Layton) see them move further up the promotion ladder, but no change in their fondness for slacking off and trying to chat up girls, nor in their ability to drive Professor Loftus (Ernest Clark) round the bend. But there's more trouble for the boys in the form of brown-noser Lawrence Bingham (Richard O'Sullivan) who trots about after Loftus in the hope of crawling into the good books.

Episodes comprise:

The Devil You Know
The Research Unit
The Minister's Health
The Black and White Medical Show
Honey Lamb
Doctors' Lib
Which Doctor?
Climbing the Ladder
Face the Music
Mum's the Word
The Fox
A Night with the Dead
This Is Your Wife
Honeymoon Special
The Long, Long Night
The System
On the Brink
Amazing Grace
Shut Up and Eat What You're Given
Yellow Fever
The Taming of the Wolf
An Officer and a Gentleman
That's My Uncle!
The Big Match
The Rumour
Blackmail
Long Day's Journey Into Knighthood