Lucy enters a dog food jingle contest and wins the grand prize: a trip to London, England. She packs her ticket in her luggage and misses her plane and finds herself seated next to Mr. Mooney on the next flight.

On the outskirts of town, the hard-nosed Vienna owns a saloon frequented by the undesirables of the region, including Dancin’ Kid and his gang. Another patron of Vienna’s establishment is Johnny Guitar, a former gunslinger and her lover. When a heist is pulled in town that results in a man’s death, Emma Small, Vienna’s rival, rallies the townsfolk to take revenge on Vienna’s saloon – even without proof of her wrongdoing.