Ji Ran, a 22-year-old graduate, is forcibly pulled into the death game Reincarnation Abyss while submitting job applications. A billion people worldwide become players, and failing an instance means dying for real. He awakens the “Undying Mark,” which lets him be reborn after death, but gradually strips away his humanity. To protect his teammates, he repeatedly sacrifices himself in exchange for information that will help them clear the game. Lin Wanqing sees that something is wrong with him and quietly records the fading of his emotions. When the truth about the System comes to light, that this is actually a selection program for Earth’s civilization, he faces the ultimate choice: become a heartless administrator, or kindle the spark of humanity in a mortal body.