The author likes wasteland survival movies and games, so he structured this novel. If there are any similarities, it is just a coincidence. The story is set in a world three thousand years later. Human civilization reached its peak more than a thousand years ago. However, a sudden apocalyptic catastrophe suddenly occurred. Human civilization broke down and the world became a wasteland, wilderness, jungles, deserts, beasts, tribes, and unknown life forms. Mutated creatures that appeared a thousand years ago also exist in the dark. Life is so fragile. Tribal conflicts, natural disasters, wild beasts, and all kinds of unknown dangers in the unknown world can make people lose their lives at any time. A bracelet gives a 15-year-old boy in the apocalypse the key to restarting civilization...