It is Lauren's birthday, and she tells Millie what she wants is for their mum and dad to get back together.
Millie and Lauren try to coax their reluctant dad back onto the dating scene, with consequences they could never have predicted.
Sharon and Mike plan a night out, but when their babysitter cancels, they decide to leave the girls with Mike's son Craig.
Tony has a date with Amber, who the girls think is way out of his league - so they decide to give his image a radical makeover.
It is Halloween and Amber brings her kids Fran and Jake over to Tony's to meet the girls. But things are more frosty than spooky.
When Mike and Craig move in, Millie has to give up her room and share with Lauren, who is not happy about it.
When Millie overhears Sharon and Mike discussing a holiday in France, she tries to get an invitation for herself and Lauren too.
Lauren's favourite band are planning a secret gig, so she abandons her plan to go to the cinema with Millie.
Lauren's new smartphone is driving everyone mad, but the device goes missing after Mike finally confiscates it. Millie is accused of stealing, and must prove her innocence.
Mum is buying a cot, researching names and calling nurseries. Millie, Lauren and Craig believe she is pregnant - and the truth must be revealed. It turns out that the doctor's appointment was for Sharon's ingrown toenails!
Mike successfully applies for a year's contract job in Bermuda - but Millie doesn't seem too pleased. As Craig schemes to keep the girls from ruining his dream year in paradise, Millie realises she can't hide her doubts - and announces at the eleventh hour that she doesn't want to go.
It is Millie and Lauren's first Christmas since the separation, and for Millie it is the chance for a fresh start - for once, a Christmas without family arguments. She persuades everyone to leave their past Christmases behind, and invents new traditions for the family. Some people struggle with it - especially Lauren, who wants everything to be like it was.
Millie and other members of the cast look back over the series. They take viewers behind the scenes and give an insight into the highs and lows of their experiences.