Abandoned by her beloved Tim, Mela, leaving her native Canada, goes to England to work for her uncle, a member of the British government. But upon arrival, she learns that he died during the German bombing of London. There are mysterious circumstances surrounding her uncle's death, and Mela intends to investigate them with the help of her friend and co-worker, Peter Flacton. Finding herself in an ambiguous situation through her own fault, she decides to marry Flacton in order to save his reputation...