This Holy Knight mainly tells the story of four beautiful girls, Huang Shiqi, Han Xiaobao, Lin Minsi, and Rou Xiaomei. One day, they investigate a case out of curiosity. Who knows that it is a monster absorbing human souls! We face the monsters bravely, and because of our unity, the potential magic power of the saints in our bodies bursts out to fight for world peace! I, Saint Knight Ruye, will never allow any destruction in our peaceful world! Otherwise, don't blame our righteous holy warriors - (together) we will never forgive you!