When Marroquín reunites with his son Lucas, he realizes that being a father is more difficult than running a criminal empire. Becerril and his elite unit realize they have underestimated their opponent. The effects of the US Army secret experiment keep spreading.

The zombie army recruits new members. Marroquín discovers that one of his men is a traitor, and a new danger hunts Lucas, who realizes that something strange is happening. Becerril gets closer to his human enemies.