Young, idealistic, newly qualified Scottish doctor Andrew Manson arrives in Wales and takes his first job in a mining town, and begins to wonder at the persistent cough many of the miners have. When his attempts to prove its cause are thwarted, he moves to London. His new practice does poorly, but when a friend shows him how to make a lucrative practice from rich hypochondriacs, it will take a great shock to show him what the truth of being a doctor really is.

Dirigible commander Jack Braden and Navy pilot 'Frisky' Pierce fight over the glory associated with a successful expedition to the South Pole and the love of beautiful Helen, Frisky's wife. After Braden's dirigible expedition fails, Frisky tries an expedition by plane. Unfortunately he crashes and strands his party at the South Pole. Braden must decide between a risky rescue attempt by dirigible and remaining safely at home with Helen.