A plane crash caused Terry Perretta (Julianne Moore) to lose her 8-year-old son. Her concern for her son severely destroyed her health, and her growing estrangement from her husband also brought her marriage to the brink of disintegration. The most bizarre thing was that the evidence of her son's existence in the family - photos, daily necessities - gradually disappeared. Terry sought help from psychiatrist Moons (Gary Sinise), and the answer she got was like a bolt from the blue - her son had never existed, and everything was just her fantasy! Terry couldn't accept this fact, and when she met Ash (Dominic West), who had also lost his daughter and was also told that all this was an illusion, she became more convinced that someone had deliberately manipulated all this. As parents, they decided to uncover the fog and find back everything that had disappeared. Mother's love is great, not only because of the ten months of pregnancy and three years of breastfeeding, but also because she firmly believed that her flesh and blood existed in this world. No one can separate them.