A successful investment banker Davis (Jake Gyllenhaal) is trying to cope with the death of his wife he had lost as a result of a tragic car accident. It does not help him in this pressure, which exerts in-law (Chris Cooper), yet Davis tries to make life returned to normal speed. One day, Davis sent a complaint to the broken vending machine with drinks and sweets, we can meet on every corner. So begins the correspondence between him and working in a company dealing with slot machines Karen (Naomi Watts). Correspondence, which increasingly includes threads personal, soon creates between them a deep personal relationship. With the help of Karen and her fifteen-year-son (Judah Lewis), Davis starts to recover inner balance, gradually getting out of the boundless abyss of despair.