厄普警长向来执法强悍，令匪徒闻风丧胆而威震四方，在19世纪无法无天的西部，自成一股安定人心的力量。然而，他曾有过厌倦之感，希望能在别的地方度日，从此不问世事，可是人在江湖身不由己，他无故被卷入一场纷争，为了维护自己所追求的和平，再次披甲上阵...After success cleaning up Dodge City, Wyatt Earp moves to Tombstone, Arizona, and wishes to get rich in obscurity. He meets his brothers there, as well as his old friend Doc Holliday. A band of outlaws that call themselves The Cowboys are causing problems in the region with various acts of random violence, and inevitably come into confrontation with Holliday and the Earps, which leads to a shoot-out at the OK Corral.