Six months after Patrick's death, Nina and Billie are caring for baby Zoe together. Nina is determined to jump back into life and return to work, while Billie counts the days 'til Mick's return.

Nina has a blast from the past when she runs into an old flame at the hospital. Billie meets with Lawrence to discuss his feelings. Will sparks fly?

Nina finds herself stuck at the airport with a handsome stranger and time to kill. Will she take advantage of the situation? Meanwhile, Billie prepares for Mick's return.

Nina and Billie face their dreaded high school reunion. While Nina tries to convince everyone she's happy to go, Billie has her own reasons not to attend.

Nina is shocked by the arrival of a new male midwife; Billie is under pressure as Lawrence's apartment goes to auction; Zara surprises Jimmy with a life-changing announcement.

Is Nina and Leo's secret airport tryst about to be exposed? Billie puts her broken heart aside to get to know Lawrence before a medical emergency shakes the Proudman family.

A Proudman life hangs in the balance; Nina faces a huge dilemma; Billie's life takes an unexpected turn.

Billie finds herself drawn into Nina and Thomas' romantic dinner plans: Jimmy worries about Zara's new obsession; can Clegg handle Cherie's return?

Billie is calm in the face of Mick's return to Melbourne. Then Nina learns why he's really in town. Can she break the news to Billie? Meanwhile, Thomas gets an unusual introduction to the Proudmans.

Billie struggles with the knowledge that Mick is single; Nina deals with the fallout from Thomas meeting the Proudmans; Kim has a shock proposal for Clegg.

Nina and Leo are floored by an unexpected patient at St Francis; Mick asks Billie to come to London with him; Cherie must choose between Kim and Clegg's needs.

As Billie prepares for a new life overseas, Nina faces Zoe's first birthday and the anniversary of Patrick's death. But first the St Francis staff must face an emergency of epic proportions.