When fashion designer Lauren Redstone gets drunk in Las Vegas to celebrate a successful deal, she does something very impulsive—she bumps into a tall, drawling cowboy called Grayson, sleeps with him, and then marries him the same day. Sober the next morning, she flees the hotel room and tries to renege on the arrangement. But Grayson refuses to play ball, insisting she give their unlikely coupling a chance out on his ranch where she can get to know the stranger she married. In return, he agrees to spend an equal amount of time in her high-society Californian world. But as the couple fall for one another in these wildly different environments, it seems both Lauren's controlling father and Grayson's jealous ex will have much to say about the success or failure of the relationship.