Multiple doomsday catastrophes such as meteorites, zombies, extreme cold, Zerg, and alien beasts are coming one after another, and human civilization is on the verge of annihilation. Jiang Yu bound the trial system in a desperate situation, signed a planet-level shelter on the eve of the disaster, hoarded tens of billions of supplies, unlocked advanced technology and genetic potential, and quietly built an immortal ark. When the outside world struggled with hunger, cold and fear, the lights in his fortress were always bright and the fruits and vegetables were abundant. When the crisis of world destruction comes again, everyone is united above the high wall. Jiang Yu became the last glimmer of light and the iron wall in the era of despair.