Kyle Miller (Nicolas Cage) is a diamond salesman who is trying to provide for his family and hold onto their house (whose value has dropped due to the economy that the mortgage is probably worth more than the value of the house).   His marriage with Sarah Miller (Nicole Kidman) is fraying on the edges and may soon be on the rocks.   Their teenage daughter Avery (Liana Liberato) is a handful and sneaks out of the house (to go to a party) minutes before a gang of robbers invade the Miller home wanting the diamonds in Kyle's safe.   What follows is a test of strength as Kyle tries to play the robbers as the robbers threaten to hurt his wife and daughter.  The robbers consist of two brothers- Elias is the leader and the Jonah (Cam Gigandet), his fragile disturbed brother,  is in love with Sarah, the leader's drug addicted girlfriend Petal, and a volatile fourth member who wants the robbery to be pulled off no matter the cost.