As Cesar and Polaco recover from the clash between their gang factions, a long-buried secret from the Urrutia family's past comes to light. The brothers will realize that they are not each other's true enemy and that the only way forward is to fight together.

With no escape and cornered by the law enforcement forces, the brothers turn to the residents of the housing project for help. The gang finds refuge from the police in the most unexpected place and regroups while they plan their next moves.

Led by Cesar and Polaco, the unified gang transforms the squatted housing project into their last trench.