Adelaida celebrates her birthday. Her parents are murdered and shes taken by sicarios. Brother Alejandro is adopted by officer David Gomez. 25yrs later hes a federal agent pursuing a cartel banker but catches his fiance, Roxana Rodiles.
Alejandro questions Roxana. She is transferred to LasDunas prison to await trial. Warden Borges learns a guard raped and killed a top cartel members lady. Alejandro informant leads him to intercept a gun shipment.
During a torturous interrogation Alejandro learns the deputy district attorney is corrupt. Roxana learns the prison hierarchy. Madre avenges Dulcita death. Pharisee launches a cyber attack on Fed HQ. Mamba and Puma fight.
By order of Nemesio, Madre has Colmillo hit the Guatemalan. Berebere ambushes Alejandros unit. Alejandro is torn from having survived and finds his informer was killed. Borges lets Puma out of the shoe. Daniel goes on his first mission.
Agent Daniel Laborde enters LasDunas undercover as Tilapia, in order to gain info from Rodiles on Montalvos whereabouts. Silvia Castaneda joins the team. Madre welcomes Tilapia and he proves himself a tough guy.
Nemesios hires a former US NavySeal from Miami. Joining Roxanas book club, Daniel begins to seduce Roxana. Hired gun grazes Captain Ferrer and Buitres sicarios also blunder. Roxana must brave a fire set as a diversion to smuggle in drugs.
Capt. Ferrer kills the former Seal during a daring 2nd attempt on his life. Zoraida's visitor tells her the Professor wants Roxana protected. Olivia learns the assassins identity and also a little of Marimars.
Tilapia kills a man for Madre. Cristero sends Turco to hit a Mil Cumbres warehouse. Buitre gets a tip and catches three of the Oscuros. Olivia finds Sanson, the man responsible for the Ferrer murders.
Roxana vows to castrate Bowser in his sleep if he messes with her. Tilapia agrees to sell drugs in prison. Alejandro orders Marimar to be investigated.