From the acclaimed director of the award-winning Monster's Ball and Finding Neverland, Marc Forster, comes this reality-bending thriller about dedicated New York psychiatrist Sam Foster (McGregor) and his urgent attempt to stop a secretive and unusual young patient he inherited, Henry Lethem (Gosling), from carrying out a planned suicide on the eve of his 21st birthday. As Sam is drawn deeper into the web of Henry's life -- and then into the labyrinth of his subconscious -- at first it simply puts stress on Sam's relationship with his artist girlfriend and former patient Lila (Watts). But soon Sam's own tightly-held grip on the rational world begins to melt away. Faced with increasingly surreal encounters and a Manhattan transformed into a wildly shifting dreamscape, Sam can no longer figure out what is true and what is happening only in his head, nor where he begins and Henry ends. So just who is Henry Lethem and why is he fracturing Sam's reality so profoundly? It soon becomes clear that what is happening to Sam and Henry is taking place not in this world but in the twilight state between living and dying . . . a place where no one can stay for long.