Everyone is transported to a post-apocalyptic wasteland highway, where deadly gray fog closes in and mutated creatures roam. Lin Hui awakens a unique cheat ability with a golden affix, transforming his initially battered RV into an invincible steel fortress equipped with a close-in defense cannon! He takes in a cute female mechanic, a cold and stunning sniper, and a lovesick, possessive genius doctor, becoming a ruthless Asura. Rejecting moral blackmail, he blasts overbearing guilds with cannon fire. Lin Hui follows the ruthless law of firepower above all, driving his indestructible battle vehicle at full speed to crush every powerful enemy in his way as he races toward the City of Despair, Busan!