Set in both modern day Earth and the parallel world of Embra, Heroes possessing magical powers wake up and are pulled into a dark realm and centuries old battle. They take part in adventures, facing off against an array of creatures in a war against the Shadow Legions, to save all of humanity.

The backstory for the game states that hidden pathways that exist between Earth and Embra have been crossed by only a few in all history. Arcane energy flows through the magical world of Embra from its molten core. Those born with the talent to harness this power can perform feats that reshape reality. Long before humans ever walked the Earth, cultures fueled by magic rose to greatness and fell to ruin on Embra over its millennia of history, destroying once grand civilizations and their achievements. Towering monuments and mystic relics that are preserved forever by arcane energies serve as legacies for these vanished people.

The Radiant Empires are the first great nations in Embra’s long past to break their world’s cycle of self-destruction. These diverse cultures joined together five thousand years ago to preserve themselves and their world in a spirit of cooperation and goodwill. Their alliance has been marked by unity, prosperity and significant advancements in mystic knowledge. The greatest of these discoveries was the revelation that Embra was not alone, but that another world much like it, but with an extremely weak flow of magic, Earth, was in existence.

When human civilization was still in its infancy, Embra’s boldest explorers bravely crossed the barrier between the two worlds, and quickly realized that humanity’s reactions towards them could be unpredictable and violent. Alongside this, Earth’s weak flow of magical power made it uninhabitable to them.

Unfortunately, they had far greater concerns back home. After millennia spent in unchallenged peace and prosperity, the pacifist scholars and artists of the Radiant Empires were no match for the arrival of an enemy that knew only war. Though much about them remained shrouded in mystery, these foul invaders – the Shadow Legions – drove the Radiant Empires from their strongholds and toppled their cities. The citizens of the Radiant Empires knew their entire way of life was doomed without an army to defend it. As a result, they turned to their only hope: Earth.

A fraction of Earth’s population, those modern society regards as urban legends, has always been able to wield magic, but the flow of magical energy on Earth is so poor that few ever suspect their potential. On Embra, the command of arcane force is infinite and the Radiant Empires have recruited strong young men and women to fight the Shadow Legions for almost a hundred years. Embra’s magical human warriors channel power in many ways. Guns are one of Earth’s only inventions that still function on Embra.

After decades of hard-won victories that pushed back the Shadow Legions, humanity and the Radiant Empires thought the long war was almost over. They were wrong. The enemy has returned, assisted by new allies: cunning beings called the Shadowlords. These foes have proved themselves to be extremely strong and hard to beat. As yet, no one knows where the Shadowlords came from, or why they remained hidden until now, but one thing is clear: if they conquer Embra, Earth will be next.