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Manhattan debutante Jerry McKay (Jacqueline Logan) heads West with her father J.W. (Montague Love) to inspect some of her family's property. No sooner has she arrived in the wide-open spaces than Jerry has had a confrontation with J.W.'s two-fisted chief engineer James Warren (Robert Frazer). Fascinated by the woman-hating Warren, Jerry vows to get him to propose to her within the week. Sure enough, he does pop the question, but by now he's so in love with her that he doesn't really care that the wily Jerry maneuvered him into marriage. One Hour of Love represents the American directorial debut of Paris-born filmmaker Robert Florey.