Jack Hughes is a cowboy who lives in solitude - mostly because he finds that being around people is stressful, and when he gets stressed out, he turns into a black stallion. It's definitely strange, and he'd rather just be left alone, a freak of nature by himself. But when he meets Claire, a young scientist searching for the Fountain of Youth, he can't resist her. Against his better judgement, he agrees to be her guide through the mountains near Lake Tahoe. He thinks Claire is normal, except for her belief that the Fountain of Youth is real, but everyone has a flaw. Then weird things start to happen to them, and Jack begins to realize that there are more things in heaven and earth than a shape-shifting cowboy.
