Midwife Grace Creswell's world is turned upside down when the daughter she gave up for adoption 17 years ago arrives at her hospital, unannounced and pregnant.

Grace scrambles to cope when Sophia's adoptive father delivers an ultimatum, and Sophia makes a surprise announcement about her baby; trainee midwife Max shows his true colours during his first major birthing challenge.

Grace and Kirk struggle to deal with Sophia's adoption plans. Meanwhile, Grace sees a surprising new side to Max when they attend a chaotic home birth.