When British Railways announce the closure of the Titfield to Mallingford branch line a group of local residents make a bid to run it themselves, backed by a monied member of the community who is attracted by the complete lack of licensing hours on trains. Unfortunately the local bus company starts to use methods that can hardly be seen as fair competition.

Short of money the owners of Ballyroden Hall must attempt to run it as a guest house, but not everyone is happy about the plan.

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.