Grace and Dan Arden are in their forties and have been on the IVF treadmill since the day they got married. Six attempts have yielded no results and with each failure a little piece of their hope dies. Indian-Australian Priya Laghari and her husband Nick Archer are being treated at the same fertility clinic and while the younger couple doesn't face the same time pressure as the Ardens, the Archers have their own problems. Priya suspects Nick is cheating and when she discovers a dating app on his phone her worst fears are confirmed. Priya leaves Nick and goes through an IVF cycle with donor sperm. On the day of her appointment, Grace and Dan also go in for their final, last-chance embryo transfer. Two weeks later the women both get their results: Grace is pregnant. Priya is not. A year later, angry and heart-broken, Priya learns her embryo was implanted in another woman's uterus and must make a choice: live a childless life knowing her son is being raised by strangers or seek custody of a baby that has been nurtured and loved by another couple.
