Mac found out she was sick. She needed a new kidney. Her biological grandparents who raised her weren't a match. Neither were her friends. So she was on the waitlist. The best match, a parent. Her mom had been a hard core drinker all her life and so she wouldn't be a viable match. That left her dad. So the first thing she had to do was track down her dad. Which would be a lot easier if she you know knew who he was. Mac and her best friends go on an epic road trip to find him.