A year before Season 1, the Borges must protect a rich man's son while dealing with forces in and out of the prison that threaten their dominance.

This prequel season looks at how Borges and Diosito replaced prison leader El Sapo, at a time when San Onofre was at its most corrupt and violent.

Ex-cop Miguel Palacios goes undercover and navigates the dangerous ins and outs of San Onofre prison as he solves a mystery and endures a betrayal.