The Radfords race to support their friends The Walkers, whose daughter is seriously ill.
Noel gives son Daniel a free first-class ticket. But there's a catch - it's one way.
Third oldest, Chloe, drops a bombshell announcement that threatens to disrupt the family business.
Millie has three kids, but only two of them with husband Harley. He wants to adopt the other, Ophelia, but will Millie agree?