After a furious row with mum Brenda, Gaynor storms out of the house and is stranded up town. The girls come to the rescue, diagnose depression and cheer her up with a romantic mission - to find Paul Walsh, the One That Got Away.

While Gaynor summons up the courage to run off again, Kelly is the first of the girls to turn 30. Rather than leave her pal in her time of need, Gaynor mucks in with a budget luxury spa day and a night on the town.

As the girls wake up from a boozy sleepover, Gaynor gets a nasty shock - an invitation to a school reunion. Whether she goes or not, she's finally going to have to face up to all the rumours about why she went and what went wrong.