The Biermanns start the process of Kroy adopting Brielle and Ariana and the timing couldn't be better –- Brielle is doing poorly at school and needs a parent who can dole out more discipline than Kim is able to impart on her daughters. Brielle gets a tutor to try to get her grades up, but when Kim announces that she wants to buy her a car, Kroy intervenes –- Brielle still hasn't done enough to deserve one. Kim realizes that giving her daughters a father comes at a price -– she has to give up some of the decision-making power she's had as a single parent.