What if you were told that every moment you experienced and every memory you held dear never happened?
Telly Paretta (Julianne Moore) is tormented by the memory of her eight-year-old son Sam’s death in a plane crash 14 months ago. While trying to work through her grief, and her subsequent estrangement from her husband Jim (Anthony Edwards), she is informed by her psychiatrist, Dr. Munce (Gary Sinise), that she is suffering from delusions, that her son never existed and she is fabricating his memories. Stunned, she tries to find evidence of Sam’s existence — photos, videos, scrapbooks.
But it has all disappeared.
Telly is convinced she is going mad until she meets Ash Correll (Dominic West), the father of one of the other plane crash victims. Together, they embark on a search to prove the existence of their children and reclaim their sanity.