Twenty years ago, three thirteen-year-old friends smoked their first cigarette in a feral field outside of the Crow Agency Reservation in Montana and vow three things: One, to never smoke again. Laney threw up, and Rose and Charli smelled terrible for days. It was disgusting. Two, to be best friends forever. Really. No matter what, they would be there for each other now and in the future. And three, to never, ever marry. The Mustang Girls Trilogy is about the three men who will do anything and everything to break that last promise.