In his final epic Western, Errol Flynn plays cattleman Clay Hardin, who, on a trek south of the border, has discovered that San Antonio saloon proprietor Roy Stuart (Paul Kelly) is actually a cattle rustler of major proportions. Determined to bring Stuart to justice, Clay runs into difficulties when he mistakes feted chanteuse Jeanne Starr (Alexis Smith) for being on the saloon owner's payroll. Meanwhile, Stuart's French-accented partner, and enemy, Legare (Victor Francen), uses the taut situation to benefit himself. Then Clay's longtime friend, Charlie Bell (John Litel), is brutally slain and Jeanne's manager, Sacha Bozic (S.Z. Sakall) is forced to skip town, Bozic, unbeknownst to Clay, having witnessed the murder. The real killer is eventually forced to confess and San Antonio erupts in a climactic gun battle that culminates in a shootout at the historic Alamo. With Hungarian actor Sakall providing some much-needed comedy relief, Alexis Smith, Doodles Weaver, and a chorus perform a few songs, including: Ray Heindorf, M.K. Jerome, and Ted Koehler's "Some Sunday Morning"; "Put Your Little Foot Right Out," by Larry Spier; and Jack Scholl and Charles Kisco's "Somewhere in Monterey." According to some reports, both Raoul Walsh and Robert Florey directed a few additional scenes.