The final installment in the Stallions and Studs series sees wrangler and riding instructor Rio Cody enjoying the single life. He can -- and often does -- have a different guest in his bedroll every night. Despite the urgings of fellow ranch hands, most of whom have found partners, Rio sticks to his motto of "monogamy is monotony." However, Rio's resolve to stay foot-loose is severely tested when he locks horns with New York college student, Mark Wembley, at a local Quarter Horse show. Mark is not at all Rio's type, and he's a pain in the butt to boot. Rio returns to his job at the gay dude ranch and manages, mostly, to put Mark out of his mind.  What happens when Mark shows up at Stallions and Studs as a guest and Rio is forced to face the fact that despite all his efforts to the contrary, he finds himself having feelings for Mark? Will Rio dig in his boot heels and continue to ride life's trails alone, or will Mark do what no other man has, rein in Rio?