Prologue:

Three hundred years had passed since the day the feral demon was slain… It was like any other day… Yoona, Blade of Eternal Bliss, Angel of Dreams, and Yuri, Blade of Eternal Pain, Demon of Nightmares, were having fun playing pranks on the two sleepy heads, Jessica, Screech of the Chilling Spear, and Onew, who had fallen asleep near each other while they were chatting.

Tiffany, Wielder of Flames, Goddess of War, had brought Jo Kwon, who had a strong interest in wars, out to watch over some war that was taking place, so she could not save Jessica from the prankster twins. Seohyun, Protector of Health, Goddess of Sleep, was away on a date with her husband, Yonghwa, Demon of Pestilence, so she could not prevent her mischievous sisters from pulling the pranks either.

Sunny, the Dissonant Blade, was dj-ing with Sungmin on the best radio in Paradise, the SunSun radio. Taeyeon, the Swift Assassin, Archangel of Death, Soojin, Angel of Death, and Hyoyeon, the Hypnotic Scythe was helping Sooyoung, Blade of the Shadows, Goddess of Death patrol Hell and the Realm of the Dead to make sure no dead spirits were up to no good. Meanwhile, the goddess herself was eating… As usual…

Out of the blue, lightning streaked across the heavens and the nine girls and three guys were teleported into the meeting room of the three goddesses. But there were three other hooded figures sitting on the thrones of the goddesses…

"It's time for the trials of the three!" the hooded figures proclaimed at the same time.