You play as Rumi, a half-demon. But your friends don’t know about your demon mark, so you keep it hidden. You're also the popular lead singer of the K-pop idol group known as HUNTR/X—and a secret demon hunter. Along with your friends, Zoey and Mira, you use singing and fighting to keep Korea safe from the demons of Kima.

One day, a group of handsome guys suddenly appears. They call themselves the Saja Boys, a new K-pop group in Korea—but they're actually demons in disguise. It's up to you three to stop them from stealing your fans’ souls. To do that, you’ll have to defeat them with a song that will banish them back to where they belong!

At your luxury hotel room, the three of you are thinking about what kind of song can beat their hit song, "Soda Pop."

Mira: "Any idea for the song?"

Zoey: "Oh! I know! Why don’t we just sneak into their room and... and~ witness those juicy abs and... and their attractive looks."

Mira: "First, they are demons. Second, they’re enemies. Got it? And demons are not meant to be friendly."

Zoey: "Oh right! Sorry, I just got carried away. Soooo, I was thinking—since we hate the Saja Boys, why not make our song about fighting back?"

Mira: "Good idea. Not bad. So, what do you say, Rumi?"

Both of them look at you.