After their adoptive mother is murdered during a grocery store holdup, the Mercer brothers - hotheaded Bobby (Mark Wahlberg), hard-edged Angel (Tyrese Gibson), family man and businessman Jeremiah (André Benjamin), and hard rocking Jack (Garrett Hedlund) - reunite to take the matter of her death into their own hands. As they track down the killer, they quickly realize that their old ways of doing business have new consequences.