Shen Yan, a soldier from the north, died on the battlefield, but when he opened his eyes, he came back to life - with a broken lamp that can absorb spiritual energy in his palm. The lamp is as long as the person is, and when the lamp goes out, the person dies. Within seven days, you can either renew your life or go back to Wangchuan and die again. It wasn't until he set foot on the road north that he discovered that this lamp was actually the last key left in the world by the Zhaoye Sect, which was exterminated a hundred years ago.