El Recluso plot
Lázaro Mendoza, a former US Marine, enters a maximum security prison in Mexico (La Rotunda), under a false identity and charged with an alleged triple murder. As Dante Pardo, his mission is to infiltrate a dangerous group of inmates and guards inside and outside the prison who are the prime suspects in the kidnapping of the teenage daughter of American Judge John Morris. In La Rotunda, Lázaro must find out who carried out the kidnapping and where the girl is.