Despite Justin's marriage proposal, Lucy can't get over the guilt of having endangered the kids. And she hates her new job. So when a crazy night out with Ned leads to the opportunity to travel the world, she is sorely tempted. But can she bring herself to leave Justin and the kids? Meanwhile, Gemma is struggling with the realities of an imminent divorce, just as Lewis goes on a drug trial for his heart, the side effects of which lead him to behave in maddening and hilarious ways, including giving a heartfelt public speech at the school play which just might save their marriage. And Mark and Abi enjoy the perks of Poppy's new posh school when they're invited to dinner by the wealthy parents of Poppy's new friend. This leads to them being "given" a housekeeper and opening up a lucrative business opportunity for Mark. Finally, Justin and Lucy agree the best thing is for her to go and see the world. But could this be goodbye forever?
