After spending five months in Baltimore, Nina returns home after receiving news of her father Darcy's heart attack. Billie and Mick are now living at Nina's apartment and trying for a baby. Jimmy also returns after being abroad with new girlfriend Tammy. Nina finds out that Chris has moved to Brisbane with Alice and Lucy. Darcy asks Geraldine to renew their vows and Nina meets a new obstetrician, Fraser King, at the hospital.

Billie and Mick continue to experience fertility problems and in desperation Billie asks Nina to consider being a surrogate for the couple without telling Mick of her plan. Darcy has another health scare while practicing for the honeymoon and Chris arrives back in time to see Nina kissing Fraser in the emergency department.

Nina and her work colleagues are up in arms about the new anaesthetist, Patrick. Meanwhile, Jimmy and Mick console each other after their respective partners insult their manhood.

Nina struggles to decide on a course of action after Fraser freezes again during a routine consultation. Meanwhile, Mick and Andrew fight over old issues, and Jimmy is upset by his parents' hypocrisy.

When Cherie discovers that Jimmy and Tammy are planning a secret wedding, Nina rallies the Proudmans in an attempt to reunite her family. Amidst the chaos, Billie, Mick and Andrew try to make a baby.

After a tragedy at work, Nina and Patrick console each other. Could this new intimacy lead to something more? Meanwhile, Billie and Mick get the results of their pregnancy test.

Exhilarated after their night of passion, Nina is determined to master the art of a casual fling. Patrick, however, seems to want something more.

Determined to be professional and forget her personal problems with Patrick, Nina is alarmed when Clegg requests they write a report together.

Nina hosts a dinner party at Patrick's, where he charms the Proudmans.

Nina and Patrick decide to fight for their relationship, but could an email from Chris Havel throw a spanner in the works? Meanwhile, Darcy and Geraldine plan a family intervention for Jimmy.

Nina's life is thrown into a spin by the return of Chris Havel. How will our leading lady juggle two gentlemen callers? Meanwhile, Billie meets Mick's mother, and Cherie faces a health scare with Ray.

Nina makes an important decision about her love life; meanwhile, Billie and Mick try to defy the Proudman Wedding Curse, and Cherie uncovers a shocking family secret.