In 2079, a virus outbreak turned Zone 7 into a zombie hell. International student Allen struggled to survive with his trapped friends. After one of them tragically mutated, Allen endured the pain and set out alone. Along the way, he made new companions, fought through hordes of zombies, battled ruthless looters, and encountered a key researcher studying the virus. Together, they drove an armored train across the post-apocalyptic wasteland, breaking through countless deadly obstacles, risking everything on a desperate journey home.