For Ada and Piper Spencer, singing is as natural as breathing. Blessed with talent and determination, these sisters hope to fulfill their dream of performing on the stages of Nashville. But there's a family secret the girls never knew. In his younger years, their dad chased his own musical dreams before he met their mom, before he joined the marines, and before he lost his life in Iraq many years ago. Ada and Piper never got to know their father. But the chance discovery of a letter leads the girls on a quest to discover who he really was. As they learn the truth about their dad and the choices he made, they also get a better understanding of themselves and the special bond that holds their family together.

Switched Before Birth follows Olivia Crawford and her husband Brian, who after multiple miscarriages, numerous failed IVF trials and stretching themselves to the limit financially, finally receive the joyous news that she’s pregnant with twins. While going through her latest round of IVF, Oliva meets and becomes fast friends with Anna Ramirez, who is struggling to have a child after years of focusing on her successful restaurants. When Anna becomes pregnant as well, the ladies celebrate and begin to prepare for their babies. Olivia is also there for Anna when she suffers a devastating miscarriage and struggles to move forward while her marriage to restaurateur Gabe Ramirez crumbles. When Olivia and Brian finally welcome their twins Olivia’s life feels complete, but the happy couple’s world is turned upside down when they discover that not only are the babies not twins, but one of the babies is also biologically Anna and Gabe’s that was implanted into Olivia by mistake.