Maryam, Catherine and Helen, colleagues at City General Hospital, are returning to work after maternity leave.

As Maryam fights to control her anxiety, Catherine weighs up what it will take to progress as a female surgeon and Helen's sister Debbie comes back into her life.

A routine operation takes a critical turn for Catherine and Maryam wrestles with the idea of adopting another child.

A gruelling night shift leads Helen to confide in Jack, and Maryam and Catherine respond to an emergency on a night out.

Motherhood throws everything at Catherine as she fights Jack for the consultant job and Helen makes a shocking discovery.

Maryam and Catherine speak at the investigation panel and all three women make decisions about the future.