Before Runeterra. Some would wake up screaming, and beyond consolation. Some could not fall asleep, slowly going mad as the nights ticked by. Some simply never woke up. Physicians were baffled until a nightmare-stricken man cried out a haunting name from his unconscious state, then stopped breathing. Magical energy arced from the man, and Nocturne appeared., people believed that dreams were figments of their imagination, meaningless images that flashed through the mind when one slept. This belief was put to the test when a rash of sleep-related incidents started afflicting many throughout
Nocturne did not take his introduction to this world kindly. He slaughtered everything he could find before mages were able to intervene and temporarily confine him. After a period of intense study, the mages divined that Nocturne hunted those in their sleep, attacking his victims where they were most powerless. This seemed to be his only purpose. The families of the victims demanded justice, but Nocturne's jailers were concerned that death might only return the creature to the place from which it came, making him even more powerful. When a weary mage guarding him finally succumbed to sleep, Nocturne vanished into thin air. Scholars have no idea whether he truly came from the plane of dreams, or whether there are any more like him. Perhaps the most disturbing theory is that Nocturne is a person's nightmare come to life. If this is true, they wonder, who is the dreamer?