Two years have passed and the once impenetrable bond between best friends Katie, Trudi, Jessica and Siobhan has been broken. As the girls gather together, it's clear things have changed dramatically – there's tension in the room and no happy greetings.
Six months earlier and Katie has returned from Australia after her relationship with Dan failed spectacularly. She hasn't really got her life back on track and she's lonely, although pretending she's fine. When her widowed mum, Vivienne, turns up on her doorstep after travelling abroad she's less than thrilled – the pair clearly have a frosty relationship and Vivienne's interfering doesn't make things easy.
Vivienne, meanwhile, sees Katie embarking on yet another potentially explosive and destructive relationship, but Katie refuses to listen to her mother.
Trudi's cake-making business has grown and it's taken over her life. Richard is now a stay-at-home dad and, with three teenage girls to keep in line, it's a tough job. Their relationship is struggling under Trudi's increasing workload so an offer from investor Chris Webb to buy the business is more than welcomed by Richard. However, Trudi won't even consider giving it up, causing Richard to confide in someone who could destroy everything.
Jessica, meanwhile, is desperate to have a baby. Having suffered a miscarriage 18 months ago she has had no luck since and it's made her realise what she really wants from life – a family. But, with Mark still recovering from bankruptcy, IVF looks an unlikely option – until he seeks a loan from a secret source close to Jessica.
Siobhan, on the other hand, is a happily single mum enjoying the quiet life with her daughter, Elsa. But when Elsa's father, Dominic, comes to visit from America, it's not just his daughter who's thrilled to see him. Siobhan comes across an engagement ring and is stunned at the thought that Dominic might propose. However, there's a huge shock in store that will change her plans entirely.