Raúl Gutiérrez

Autobots and Decepticons are at war, with humans on the sidelines. Optimus Prime is gone. The key to saving our future lies buried in the secrets of the past, in the hidden history of Transformers on Earth.

One night, while trampling the emotions memories of Federico, a chain of decisions leads even point of no return. And when I least expected it, not knowing when your clock showed, his life changed forever ... for eternity. Regardless of the name, neither good nor bad he did, or how others judge them, only their decisions will make the difference when you get ... the Zero Hour.

On October 2, 1968, a student uprising descends into violence after the Mexican government begins to use lethal force against the protesters.