Upper Middle Bogan series 1

When Bess Denyar, a doctor with a posh mother, an architect husband and twin 13-year-olds at a private school, finds out that she is adopted, she is stunned, but even more so when she meets her birth parents - Wayne and Julie Wheeler. If that’s not enough to digest, Bess also discovers that she has siblings - Amber, Kayne and Brianna. The Wheelers head up a drag racing team in the outer suburbs, and are thrilled to discover the daughter they thought they had lost.