The third series finds Michael Scofield back in prison with disgraced FBI Agent Alexander Mahone, ex-prison guard Brad Bellick and villainous Theodore 'T-Bag' Bagwell. But Panamanian prison Sona is no Fox River---the inmates run the ruthless penitentiary on the inside while armed guards beyond the fence stand ready to shoot any would-be escapees.
At the top of the prison pecking order is murderous drug lord Lechero, who tells the new inmates that disputes are resolved via the gift of a chicken foot, which signals an inmate's desire to fight another to the death. Lechero immediately distrusts Michael for fear that his celebrity status as an escape artist may threaten his rule.