Gloria Marmolejo did her best to raise her two boys, Manny and David, as a single mother. The deeply religious woman taught them the difference between right and wrong, and how to be responsible young men when they started families of their own. But when Gloria suspects that David, a married father of four, is stepping out with his younger underage stepsister, she does everything she can to keep them separated. This transforms into a deadly mission that leaves the family fractured.