Riku Hayashi, a high school gaming enthusiast obsessed with Armory: Dead Zone Protocol, finds his virtual world colliding with brutal reality when a zombie outbreak devastates his campus. Caught in the chaos, he loses consciousness fleeing the undead horde. He awakens in a gore-stained classroom to discover a floating interface—the identical system from his mobile game now materializing before him. Through this digital gateway, Riku gains access to an arsenal of power: experience points, level progression, and weaponry ranging from firearms to armored vehicles. Armed with this supernatural advantage and game mechanics as his only edge, Riku must navigate a world consumed by infection, strategic survival, and impossible choices. His path becomes a desperate race against extinction—one where the line between player and survivor blurs, and humanity's last hope rests on the shoulders of a teenage gamer thrust into an unforgiving nightmare.