Aspiring young Scottish politician John Shand enters into an unusual agreement with the wealthy Wylie family -- if they fund his education, he must marry their daughter, Maggie. Staying true to his word, John weds Maggie and begins a successful career, thanks largely to his savvy wife. The couple's relationship is placed in jeopardy when John faces temptation in the form of the lovely aristocrat Lady Sybil Tenterden.