Cath's world shatters when her newborn daughter, Mia, is diagnosed with a deadly illness, forcing her to confront the devastating consequences of her own desperate choices. As Cath grapples with Mia's deteriorating health, she finds solace and a dangerous escape in an affair with Richard, a fellow parent whose charismatic optimism about a cure offers a seductive alternative to reality. However, the nature of Mia's illness means Cath's betrayal carries catastrophic risks, jeopardizing not only her marriage but her baby's life.

The novel is described as 'Brilliant! Cuts to the heart yet powerfully uplifting' by Jane Corry, suggesting a strong emotional impact on readers. The premise sets up a narrative that delves into the complexities of parental love, the devastating effects of illness, and the moral compromises made under extreme duress. The story appears to balance profound despair with a potent sense of hope, likely resonating with readers who appreciate emotionally charged dramas that explore difficult life circumstances. The focus on Cath's internal conflict and the catastrophic consequences of her choices indicates a character-driven plot designed to provoke thought and empathy.