In Mexico City's infamous Lecumberri prison, three drug-addicted convicts celebrate getting drugs from one of their the mothers. They are found out and locked up in the "apando," the dreaded punishment cell. Protests over the treatment of those held in the cell lead to a bloody confrontation.

En la cárcel de Lecumberri, tres presos drogadictos arman un plan para que la madre de uno de ellos introduzca droga al penal. El plan funciona y cuando ellos celebran son descubiertos y encerrados en "el apando", la celda de castigo. Las protestas por la situación de los "apandados" provoca una sangrienta trifulca.