Jac's delivery date looms. When she starts experiencing contractions ahead of schedule, Jac panics and the team on Darwin scramble into action. After a traumatic Christmas break, Serena returns intent on starting afresh. When she is surprised by Edward's return, Serena is forced to question her entire future. Ric goes back to his old university for an alumni ball. When he meets an old flame, he realises that life is never as straightforward as he thought it would be growing up (thetvdb.com)