In the year 2098, humanity enters a new age when a mysterious cosmic artifact known as The Core appears above Earth. Without warning, it activates a universal System that grants every human supernatural abilities, evolution paths, skills, and ranks. For 17-year-old Kai Ren, however, the awakening is a disappointment. While others receive powerful abilities, Kai is assigned Null, an apparently useless F-Rank ability that leaves him at the bottom of humanity's new power hierarchy. But Kai's awakening contains a secret. When an error appears in his System interface, Kai discovers that he possesses something no other human should have: Administrator Privileges. Hidden behind the ordinary System is a forbidden function known as System Override, allowing Kai to access, manipulate, and eventually challenge the very System governing humanity. His discovery comes at the worst possible moment. The First Wave begins. Millions of monstrous creatures called Shadowlings emerge from mysterious portals across Earth, forcing humanity to fight for survival. As Kai struggles to protect those around him, he unlocks his first forbidden skill—System Hack—and realizes that his supposedly useless Null ability may be the key to something far greater. But the monsters are only the beginning. The System reveals that Earth is merely Stage One of a cosmic tournament, and humanity has 99 years to evolve, survive, and prove itself worthy. If humanity fails, Earth will be erased. Now Kai must grow from an insignificant F-Rank awakened into something the System never intended to create. Along the way, he will face increasingly powerful monsters, rival humans, ancient civilizations, alien forces, and hidden cosmic entities. Yet the greatest mystery remains: Who created the System? Why was Kai given Administrator access? And if the System was designed to help humanity evolve... why does it seem determined to keep Kai from discovering the truth? The countdown has begun. Humanity must evolve—or disappear.