Jack and Riley Campbell-Hayes begin a journey that will change their lives forever.

Set against the backdrop of the Double D, the cast of the Texas books face changes that won’t leave a single one of them untouched.

Jack and Riley want to extend their small family of three. Their first choice is surrogacy with Jack as the father and when all this begins smoothly both men can't help but contemplate at what point would things go wrong. After all, their lives are far from normal and nothing is ever smooth.

Add a small four-year-old boy in foster care into the mix and suddenly things become a whole lot more complicated.