Martha (Vanessa Kirby) and Sean (Shia LaBeouf) are a couple who have fallen in love, despite their class divide and are eagerly expecting their first baby. When she goes into labor, their chosen midwife isn't available so a substitute midwife (Molly Parker) is sent to the house instead. Complications interrupt their planned home birth, sending the couple spiralling into tragedy.
While Sean is distraught, angry and visibly grieving the loss, Martha responds quietly, going back to work and resuming her corporate job. Sean decides to take the midwife to court and Martha’s mother (Ellen Burstyn) blames Martha for the loss.