Three Rivers centers on Rebecca Watts, who left her family's Texas ranch years ago to work at an upscale hotel in New York, but after being promised ownership of the ranch by her smooth-talking cowboy dad Beau, she's back and ready to utilize her big-city tactics to turn their rustic ranch into a destination spot oozing Southern hospitality. Getting her siblings to fall in line with her vision will be the real thorn in Rebecca's side. And that's going to be even harder once Beau reveals a life-changing family secret.