Ever since titanic monstrosities began overrunning Mexico, civilization has been kept under the watchful eyes of the ancient robotic guardian, Draco Azul! Guided by an amateur pilot, a street-savvy woman, and an AI mentor, the Primal Warrior has been the only thing standing between mankind and certain destruction. However, the situation is about to become a lot more gruesome when a vampiric creature from the mech's Mesoamerican past resurfaces...