The moment he opens his eyes, special forces soldier Lu Ran finds himself three days before the zombie virus outbreak, and unexpectedly binds himself to the “Doomsday Tycoon Simulator.” While everyone else is fighting over a single loaf of bread, his System shop offers an astonishing discount on an unlimited supply of expensive pre-apocalypse goods: premium military rations, pure water, scarce medicines... even relics of a civilization that had already vanished. Food piles up like mountains, he has more than enough purified water to bathe in, and a single bottle of antibiotics can buy the loyalty of an elite bodyguard. But when everyone else thinks he's just a lucky hoarder, Lu Ran looks at the row of grayed-out ultimate items deep in the System, labeled [Planetary Assault Carrier] and [Ecological Dome], and the blood-red warning that keeps appearing: “Caution: Global evolution has begun. Countdown to the first ‘catastrophe’: 71 days, 23 hours, 59 seconds.” He knows the real test is only just beginning.