Behold, the Radiant Light of Humanity

In this world without Ultraman, a terrifying dark force from another world spies on it through a wormhole. To turn this world into nourishment and force open the gateway to it, the creatures infiltrate Earth, bring out the darkness in people, turn them into monsters, and wreak havoc across the world, fueling conflicts among humanity. When Chen Yang, an eighteen-year-old boy, is in despair both physically and emotionally, he meets a man in black. Seeing the despair in the boy's heart, the man wants him to fall into darkness and become a monster. But Chen Yang holds fast to who he is, transforming only into a giant. After merging with the faint light conveyed by a Giant of Light from another universe, he gains the power of light. Relying on himself, he strengthens that power and fights back against the darkness.