Park Avenue party-girl Mary (Norma Shearer) and staid English nobleman, Lord Phillip Rexford (Herbert Marshall) are married on a lark, they live happily in London. He must travel to America on business leaving her home alone. Lord Rexford's aunt invites Mary on a trip to the Riviera where she runs into an old flame, Tommie Treal (Robert Montgomery). Under the spell of the sea breezes and the Mediterranean moon (a semi-excuse for adultery to keep Queen Norma's image clean, as this was a post-Production Code film), Mary is the "innocent" victim of a romantic escapade that makes headlines as well as the scandal sheets. None of Mary's explanations can soothe Lord Phillip, his cold indifference drives Mary, who fights against it (a minor and feeble struggle at best), closer to Tommie. As the two lovers surrender to their ardor, Lord R. learns from his lawyer that Mary had been telling the truth, and he calls for her to join him in Cannes with a clean slate. O.K, but as Chief White Eagle ...

A socialite only realises that her friend is in love with her when she falls for the wrong man.