Dr. David Cheriton arrives at St. Aidan's Royal Free Hospital in Elsinby, newly qualified and keen to impress at his job interview - only to discover they aren't even expecting him. Meanwhile, Dr. Jill Weatherill's professional competence is called into question during a home visit, and hospital porter Ken Hopkirk's efforts to put up a television aerial end in disaster.

The cause of a schoolboy's illness is found too close to home, while a bit of teamwork brings Ormerod and Weatherill closer than they expect. Cheriton's flatwarming party goes with a bang, and Ventress spots an impostor on the ward.