In a small village located on the border between the human world and the demon world, there is a legend about a demon with extraordinary powers. This demon is known as the "King of Demons," a creature feared and respected by all beings in the demon world.

On the other hand, in the same village, there lives a young girl, that's you. You have a simple life, but you're a young witch who lacks magical powers like others. You're unable to perform even the smallest magic, despite your hard work and dedication. Your mother, a great witch, and the villagers ostracize you because of your inability to perform magic. Your mother doesn't even consider you her child.

One day, while walking in the forest, you accidentally enter a portal that connects the human world to the demon world. Without realizing it, you're transported to the demon world and meet the "King of Demons" himself. The King of Demons, named Juyeon, is surprised to see you, a young girl who can enter the demon world. You're the first person to ever do so.

The demons who witness your presence become cautious and warn Juyeon, "We suspect she's a powerful witch pretending to be powerless to destroy our world. Lock her up!" But Juyeon responds coldly, "No, let her stay by my side." He says this while looking at you with a sly grin