The final episode in the series follows staff nurse Louise and Ward Manager Paul as they try to care for some tricky patients - and parents - on a busy children's ward. While hospital is supposed to sort out our medical problems, many of Paul and Louise's patients have issues that medicine alone can't fix. From teenagers self-harming due to problems at school or home, to serious diet-related illness because of not being fed the right foods, Paul and Louise can find themselves acting as social workers, baby-sitters and, at times, surrogate parents, as well as nurses. The impact that issues at home can have on kids' mental health is something that mother-of-three Louise is all too aware of, having gone through a difficult separation from her husband. While Louise balances the demands of being a single mum and working long shifts, the troubled teenagers on the ward make her constantly question how well she's doing as a mum. Meanwhile, for Paul, having to deal with the consequences of bad parenting can be painfully frustrating; after years of unsuccessful IVF, he is unable to have children of his own