The famous female detective Huang ZiXia turned from a genius at solving cases to a murderess who poisoned her whole family, a wanted criminal in all the lands. She could only escape to the capital but unfortunately, she met the Kui Prince, Li ShuBai. As a mere eunuch, she must now investigate the mysteries around her. The sky grows darker and the rain keeps pouring down. Huang ZiXia and Li ShuBai follow the endless clues through the whole world.