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 puts his own screws to the gang to uncover this 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. A newly released Tom stokes discontent with his son’s leadership. Winters makes a sneak attack on the Ravens.

An FBI raid gone wrong takes WMD off the streets but leaves Neckbone out for Raven blood. Agent Price demands Hammond bring his father into the fold by any means necessary. Tom uses a successful heist to assert his precarious power. From hiding, Neckbone begins to exact his revenge.

After Hammond and Cole’s worst fears are realized, their search for Neckbone escalates. Byrd pursues WMD’s shady connections with big pharma, but gets no help from the Bureau. Agent Price confronts Tom in an effort to flip him. Foster reveals to Beach explosive evidence he stole off Winters.

When Hammond and crew track Neckbone to his hideout, a shocking scene awaits. Just as the Ravens find themselves beset on all sides, yet another enemy comes back to bite them. Foster’s play against pharma CEO Shankman backfires. With their back against the wall, the gang must fight for their lives.

The Feds descend hard on the Ravens. Hammond is ready to sacrifice himself, but Beach has an ace up her sleeve. Hammond strikes a deal with Agent Price in order to save his crew, but the deal is not what it appears. The Ravens finally square off with Neckbone.

The Ravens are left reeling from a failed stash house robbery that has the Cartel out for blood. Cole and Christine learn of a turf war heating up on their patrol streets. Steve wrestles with how to silence Agent Price before her testimony at the Police Commission.

The DEA raids the Ravens' security business and Carmen’s legitimate assets. Tensions flare as everyone searches for the source of the DEA leak. To put an end to the bloodshed, Cole tries to broker a truce between G and Clinton. Karen presses Michael to come clean about his past with Abigail.