Tess longs for a baby, but when Freddie arrives via IVG, she can't bond with him. Three years later, an accident reveals that Freddie's not even her child. A mix-up with the embryos had led to a woman, Annie, raising Tess's daughter Willow instead of her real son Freddie. Tess is adamant they must swap, but Annie refuses, and so a battle begins that will prove even more difficult than any of them could imagine. A thought-provoking and tense tale.