Two sisters. Two messy lives. One idea that's going to fix everything... Sinead is a 'single girl living the dream'. At least, that's what her Tinder profile says. In reality, she's just been fired from the job she pretended was glamorous, her flatmates are fed up with her, and her sister won't answer her calls. Single parent and out-of-work actor Sarah doesn't have the energy to deal with Sinead right now. Her home is, apparently, on the verge of collapse. Repairs are going to cost a fortune and she's counting on her agent to come through for her (her ex certainly won't). When Sarah lands a high-paying movie role 100 miles from home, Sinead has a brainwave that will solve all their problems: she'll take care of her sister's kids in Dublin (what could be easier than keeping two six-year-olds out of trouble?) and Sarah will move into Sinead's house-share in Belfast while she resurrects her career. And possibly even has some fun for a change. But the swap is less straightforward than expected. And as Sarah and Sinead step into each other's lives, they discover that they don't know each other as well as they thought - and maybe have a lot more in common than they realise...