In 2025, Chen Mo, an ordinary employee, was accidentally bound to the "cross-time and space trade system" and was able to shuttle between the modern city and the doomsday wasteland. When others were still worrying about mortgages, he had exchanged a box of expired bread for gold; when capital giants were competing for the market, he had used doomsday technology to build a business empire. But the price of traveling between the two worlds is gradually becoming apparent - doomsday disasters are penetrating into the modern world, and the mysterious organization "New Era" in the wasteland has already set its sights on this "key" that can travel freely.
