It is difficult to say when the Immersion happened. There is little doubt as to where it began. It was in a village. Despite an impoverished life, the village held a community rich in the love of life and each other. Some would say these conditions are the essence of an Immersion. Mik and his friends are at that age when the future looks infinite in all its possibilities. Life in the Village has never seemed so good. This year they attend the county fair as adults. But there is a world outside that cares little for the country people and their yearly celebrations of life together.

Everyone could see it coming. But one man could do something about it. Oh, he couldn't avert the nuclear holocaust, but a scientist in Austria, ruthlessly using billions of research dollars for his own purposes, set himself up and out: he created a time machine, and filled a warehouse with low-tech survival gear. Too bad he didn't get to use it himself. Instead, a team of American grad students, led by their professor, is sent back to the late Roman Empire. Even though they are experts in this time and place, they are about to realize that books and actual experience are very different things.

It is known as the Day of Awakening. Across the continent, the Heavenly Interface appears, presenting each being with a system to track their skills and quests in the name of achieving their goals. Bandits rise to power, forgotten masters come out of seclusion, and spirit beasts arise from their slumber, drawn to the promise of a new era. Little do any of them know, it is Kai, a young herbalist from a small village, who was the cause of the Heavenly Interface's introduction.

The stronger his opponent, the harder he hits. Saving an innocent from a drug-crazed superhuman should've left Nil broken. Instead, it wins him the Nexus' attention. Nil is done feeling small and watching his family scrape by. He now has the opportunity to make a difference. Apocalypse Arena holds the key; where the multiverse's champions battle and keep the Scourge at bay. Pain, death, and heartbreak await all who run the gauntlets, but Nil has what it takes to grapple his way to the top.

Xavier Collins was sitting in class when the System integrated Earth into the Greater Universe, where countless vast kingdoms, empires, and collectives battle for domination. He didn't know what choosing to be a Champion would entail. He just liked the sound of it. But when he's teleported to the aptly-named Tower of Champions, he must face challenges against those who have known about the System since birth.