Ever since the 1970s, people with supernatural abilities named 'users' begin to appear. It seems that once someone experiences an extraordinary or extreme situation, they start to weld powers whose capabilities propel them from that particular situation.
With populations of users in less developed countries soon outstripping those in richer, wealthier countries, a divide is soon formed and anarchy ensues. And in a world where users run rampant, whoever has the greatest ability is King.
However, when an aspiring young man with a seemingly useless abilities join the HQ(a government-ran organisation for users in the US), he starts a chain of events that changes the world forever.