This story takes place during the Jiajing reign of the Ming Dynasty, a time when Japanese pirates and sea bandits ran rampant, causing great suffering among the people in the coastal regions of the south. This film focuses on the renowned anti-Japanese general Yu Dayou as the protagonist. It tells the story of Yu Dayou during his youth, where he uncovers the schemes of Japanese pirates and sea bandits, bravely fights against them, and defends the people and the territory of the Ming Dynasty. The film conveys a strong sense of patriotism and deep national pride. In this story, young Yu Dayou undergoes a transformation from immaturity to maturity. In his youth, Yu Dayou simply aspired to become famous and be a great hero. However, through his struggles against sea bandits and Japanese pirates, he gradually realizes the true meaning of life. The true essence of a hero lies in serving the nation and its people. With his sword aimed towards the greater cause, he works to uphold and support the world....

The Imperial Astronomer suddenly commits suicide in the bustling city. Before committing suicide, he kept chanting, "Pisces is now in chaos, and the mirror is full of vitality!" Emperor Renzong gives Bao Zheng three days to solve the case. Bao Zheng and Zhan Zhao goes to the Supreme Court to investigate the case, but the Supreme Court is deliberately making things difficult for them. Despite this, Bao Zheng still finds important clues. The Pisces Jade Pendant that is supposed to be on the Imperial Astronomer goes missing, and the vice minister of the Supreme Court is also exhibiting the same strange behavior as the Imperial Astronomer before his suicide. The legend of the Pisces Jade Pendant surfaces, but there are still no leads, and there is only one day left before the deadline…...