Starring Toni Collette and Matthew Goode, BIRTHMARKED is a comedy that seeks to answer the age-old nurture vs nature question: how much of our behaviour is inherited and how much is learned? In an attempt to settle this debate, Catherine and Ben conduct an experiment by raising their children contrarily to their genetic heredity, to prove that everyone has the same potential to become anything. But what begins as a scientific project may ultimately lead them to discover the true value of family.