What if someone gave you a box containing a button that, if pushed, would bring you a million dollars...but simultaneously take the life of someone you don't know? Would you do it? And what would be the consequences?

The year is 1976. Norma Lewis (CAMERON DIAZ) is a teacher at a private high school and her husband, Arthur (JAMES MARSDEN), is an engineer working at NASA. They are, by all accounts, an average couple living a normal life in the suburbs with their young son...until a mysterious man with a horribly disfigured face appears on their doorstep (FRANK LANGELLA) and presents them with a life-altering proposition: the box.

With only 24 hours to make their choice, Norma and Arthur face a momentous moral dilemma. They soon discover that the ramifications of this decision are beyond their control and extend far beyond their own fortune and fate.