Confronting, amusing and compelling, this is a story about choices and how they shape who we become. There is good love and bad love. Good sex and bad sex. And sometimes it's hard to know the difference. Paediatrician and mother Mia Sandhurst is scraping to keep her marriage together after her husband of 25 years breaks her heart. Finally facing reality, Mia embarks on a series of outlandish new behaviours to make startling discoveries about herself, love and life. But the lies and betrayal Mia endures are nothing compared to those of her 15 year old patient, Rachel Hooper. Set on the magical coast of the Fleurieu Peninsula, WHAT MATTERS MOST is a story of love, family, misplaced loyalty and how our choices shape who we are.