Due to the greed of humankind, Earth draws ever closer to annihilation. In the last moment, humans try to overcome the crisis by creating an artificial black hole, but due to the excessive energy created by the black hole, monsters that threaten humanity are created. During this, humans who awaken their supernatural power due to the energy appears and saves Earth from disaster. Humans call these supernaturally powerful skills 'Hero Souls'. Hundreds of years pass on Earth, and the descendants of these heroes awaken their 'Hero Souls' and train to become the strongest among each other. They also need to prepare for monsters that can re-appear at any moment and threaten humankind.