Hanjun, who used to live alone, wakes up in a strange, old church in a different world called Eorera. In this world, there are two gods: the God of Light and the God of Darkness. A thousand years ago, the God of Darkness created demons and attacked humans. The God of Light was nowhere to be found, and people believed they were abandoned.

Hanjun finds himself mistaken for being the God of Light by an old priest who was praying for help against the demons. Even though Hanjun is not actually a god, he ends up in a divine body on a stone throne, realizing he has lost most of his powers. He decides to help the humans by recruiting players from Earth through a game he creates called "God's Games Online."

He sends out gaming equipment for free to a few selected players, who will enter the game to help protect Ulon Town from the approaching demons. Hanjun also creates a game system and an NPC guide, using the old priest named Barry to lead the players.

Hanjun hides his true identity As "Holy Son" and starts preparing to gather faith and regain his power to protect the people of Eorera.