The Blackstone Group secretly conducts forbidden biological experiments, accidentally triggering a major containment breach. Mutant beasts break through the defenses and overrun the entire city. Hostile factions emerge, and various forces maneuver against one another in a struggle for power. Shi Jiang leads the Protocol Squad into the crisis, rushing to the rescue and fighting a bloody battle. Combining sci-fi containment, rule-based horror mysteries, and hardcore FPS gunfights, the series tells a passionate story of humanity's defenders.