A world-renowned K-pop girl group balances their lives in the spotlight with their secret identities as bad-ass demon hunters, set against a colorful backdrop of fashion, food, style, and the most popular music movement of the current generation. When they aren't selling out stadiums, K-pop superstars Rumi, Mira and Zoey use their secret identities as bad-ass demon hunters to protect their fans from an ever-present supernatural threat. Together, they must face their biggest enemy yet - an irresistible rival boy band of demons in disguise.