This is America's war zone: Oakland, California. It's a city made up of thousands of gang members who own the streets and enforce their rules with guns and violence.  It's all part of what everyone calls "The Game" - a world of drugs, money, and retaliation.  Right now, the cycle of violence is spinning out of control, even as Oakland's elite Gang Unit tries to stop it.  Go up close and inside the lives of Oakland's gangs, into the jails where the leaders still operate, and along with the police as they hunt for a murderer - if the rival gangs don't get him first.