A moral decision has far-reaching consequences for Norma and Arthur Lewis (Cameron Diaz and James Marsden) when a mysterious visitor (Frank Langella) presents them with a curious box. Inside the box is a button. If they push the button, two things will happen. (1) They will receive a million dollars. (2) A stranger will die. Donnie Darko creator Richard Kelly takes the fiendishly simple conundrum to the outer limits in this sprawling sci-fi mystery.