Ji Yan, the emperor of the Zhou Dynasty, rose up in the troubled times. With his outstanding military talent and political wisdom, he united all forces to overthrow the tyrannical previous dynasty, established the Great Zhou Dynasty, and made Luojing its capital. Ji Yan suddenly died after unifying the world, leaving the 16-year-old crown prince Ji Zhao to succeed him. Powerful ministers and princes were eyeing him, and the dynasty was facing the crisis of splitting. With the assistance of his mother, the Queen Mother Han, his tutor Xie Mingyuan, and the commander of the Forbidden Army Zhao Wuji, young Ji Zhao began to learn how to govern the country while secretly cultivating his own power. A group of powerful officials headed by Prime Minister Du Wenyuan secretly controlled the government, colluded with the northern princes, and planned to weaken the imperial power; floods in the south exposed the corruption of the imperial court, paving the way for the story. Ji Zhao was assassinated during a private visit in incognito, but was saved by the mysterious woman Liu Qing'er. This experience made him determined not to be a puppet emperor anymore, and began to take the initiative to deal with the undercurrents in the DPRK.