Kings Cross, 1969: An ambitious midwife returns from London to uncover a system of forced adoptions at the local hospital. A pregnant country girl, Viv, wakes to find she's been drugged by her parents and sent to a home for unwed mothers.

June 1969. As the world counts down to the first moon landing, Joan flirts with danger at the hospital and makes a powerful enemy. Annie returns home after giving up her baby, but realises her old life is gone forever.

Joan's new career as a doctor is threatened when she helps a pregnant teen. Viv's estranged mother tries to take control of her life. Annie learns a harsh lesson as a single mother in 1970s Kings Cross.

Joan is obsessed with finding the father of Gail's baby. Viv finds an unlikely ally in Matron as she suffers through a difficult labour. Shirley receives a surprise telegram from Vietnam.

Patricia refuses to sign adoption papers for her unborn baby, with tragic results. Joan gets closer to finding the family of Gail's orphaned baby. Matron's world is rocked when her biological son is released from prison. Martha is swept off her feet by an admirer.