A god who wanders in different dimensions comes to the world of exorcist boys because of a mistake!
The gate of time and space was created due to human obsession, and more and more humans came to this fictional world.
The black and white twins created and raised by God became the guardians of the gate of time and space!
"Human, what is your wish?" Hei, "As a price, you have to pay..."
"Hello, where do you want to go?" Bai, "Don't die there!"