When a group of corrupt cops known as the Ravens are arrested, they must induct an FBI mole into their ranks or face prison; Raven leader Steve Hammond and brother Cole must hide he deal from the gang -- including their imprisoned father, Tom.

With Tom's life threatened in prison, Hammond and Cole demand that kingpin Neckbone call off his dogs; the Ravens must hide the deadly truth about Sleep -- both from Neckbone and the Feds; Hammond yields leverage over agent Byrd.

A text message from beyond the grave puts the Ravens on edge; Neckbone uses extreme methods to pressure the Ravens into revealing Sleep's fate; the line between friend and enemy begins to blur for Byrd.

Beach's entanglement with Foster grows more dangerous by the day; after a shocking massacre of innocents, agent Price pressures the Ravens to track the source of WMD, a dangerous new street drug; Neckbone uncovers a new threat to his business.

Beach hangs Foster out to dry, putting the Ravens and the Vipers in a position of mutual self-destruction; when Sleep's body is found, Neckbone sets a bounty on WMD ringleaders; newly released Tom stokes discontent with his son's leadership.

Tom's revenge against Winters risks an all-out gang war; with a fresh body on his doorstep, Neckbone gives Hammond a deadly ultimatum; father and son vie for control of the Ravens, creating a deep gang rift.