Polaco is established as the leader of Libertad del Puerto's gang. At odds with the police and serving the mayor's interests, his goal remains to resist as the head of the gang and bring Palacios down. The tragic consequences of Polaco's decisions lead to the re-emergence of a former rival for power within the gang.

While Polaco grapples with the death of a friend and the sudden reappearance of Myriam in his life, he has to cope with a new reality: the return of Cesar. The brothers will face each other for leadership of the gang amid suspicions about Tío's death.

Cesar's return unsettles Polaco's gang, and its leadership is in danger. Huevo and Melli take matters into their own hands, taking a very high risk, but the consequences are direct: Cesar comes back stronger than ever, forcing Polaco to resort to a strategy that will jeopardize the family.

Polaco's testimony brings Cesar down, forcing him back into hiding. The path he thought was finally clear becomes treacherous, and he faces his brother for the last time.

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.

Whatever the cost, the Urrutias will risk everything and go to any length to stop being hostages to the political and police powers that use and discard them.