As a destructive hurricane wreaks havoc outside, Army veteran Frank McCloud (Humphrey Bogart), war-widow Nora Temple (Lauren Bacall) and her invalid father-in-law face a worse storm inside the Temples' tumbledown Florida hotel in Key Largo. Frank merely stopped by to pay his respects to Nora, only to find the hotel commandeered by exiled gangster Johnny Rocco (Edward G. Robinson). Will the war-weary Frank step up to fight again?