Falling in love with her paramour but unable to divorce because of societal conventions, married Jazz Age socialite Theresa Marshall tries to make the best of the situation but reconsiders her values when her lover falls for her soon-to-be sister-in-law.

1924. Ginger Kelly wakes up in tranquil Cocoa Beach, Florida, having fled south to safety in the company of disgraced Prohibition agent Oliver Anson Marshall and her newly-orphaned young sister, Patsy. But paradise is short-lived. Marshall is reinstated to the agency with suspicious haste and put to work patrolling for rumrunners on the high seas, from which he promptly disappears. Gin hurries north to rescue him, only to be trapped in an agonizing...