Flatmates? Friends? Or something else entirely? Hazel and Alfie have just moved in together as flatmates. They've also just slept together, which was either a catastrophic mistake, or the best decision of their lives. Before they can decide, Hazel's sister Emily and her wife Daria arrive for a visit, setting in motion a chain of events that will reshape all of their relationships in unexpected ways. As the four of them wrestle with the challenges of modern life, they are bound together by heartache and hope in this warm, witty and devastatingly relatable story.