On New Year's Eve 1946, Sheila Page kills her husband Barney. She wishes that she could relive 1946 and avoid the mistakes that she made throughout the year. Her wish comes true but cheating fate proves more difficult than she anticipated.

In 1903, Doctor Huntington Bailey meets a friendly older lady during a train trip. She tells him that she is going to visit her brother Nick and his lovely young wife Allida. Once in New York, Bailey hears that his train companion suddenly died. Shortly afterward, he meets the strange couple and gets suspicious of Nick's treatment of his wife.