Fiero is hired to assassinate the newly-elected civilian president of San Pedro. His employers are a group of generals, threatened by the liberal sympathies of the new president-elect. The generals, having killed Fiero's father years ago, trick Fiero into thinking he is working for the leftist People's Party. Meanwhile, a CIA agent is sent stop to the assassination. It's a race against time as the agent must stop the HOUR OF THE ASSASSIN.

In an abandoned glass factory, a woman exploits her workers, all of them mentally ill. A gang of young assailants decides to rob said factory, but in order to achieve that, they must get one of them into the woman's house first. What they do know is that Maruja, the woman's goddaughter also lives there.