The Demon Hunters were a group many years ago, and they fought many evil spirits, demons, monsters you name it that came to threaten the world. During their final fight, they created a seal to trap all demons in the underworld. After that, they all went their separate ways, and it’s been a while since they’ve had contact with one another. And now, a crack has been made in the seal and a cruel demon team has been trying to take over the world as a... popular k-pop boy band? Anyways, you and your friends have to gather the demon hunters, reunite them, and stop the demons from taking over again.