Explore the intertwined lives of two families residing on opposite sides of the highway. Bess Denyar, a doctor, is surrounded by her sophisticated mother, Margaret, her architect husband, Danny Bright, and their 13-year-old twins, Oscar and Edwina, who attend a private school. Bess’s world is turned upside down when she learns she was adopted. Her surprise deepens upon meeting her biological parents, Wayne and Julie Wheeler, and discovering she has three siblings: Amber, Kayne, and Brianna. The Wheelers, a boisterous family passionate about their drag racing team in the outer suburbs, are overjoyed to reunite with the daughter they believed was lost to them.