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.

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.

A new prison, a new warden, a new nemesis, a new kid, a new alliance and an ex-wife play critical roles when the Borges are moved to a new lockup.