Naive Stanley Windrush returns from the war, his mind set on a successful career in business. Much to his own dismay, he soon finds he has to start from the bottom and work his way up, and also that the management as well as the trade union use him as a tool in their fight for power.

On a train headed for England a group of travelers is delayed by an avalanche. Holed up in a hotel in a fictional European country, young Iris befriends elderly Miss Froy. When the train resumes, Iris suffers a bout of unconsciousness and wakes to find the old woman has disappeared. The other passengers ominously deny Miss Froy ever existed, so Iris begins to investigate with another traveler and, as the pair sleuth, romantic sparks fly.