Since Emperor Yongle came to the throne, the imperial court has devoted all its efforts to build an ocean-going fleet, hoping to spread the Ming Dynasty's fame far and wide. Zheng He was ordered by the emperor to command this unprecedentedly large fleet, which made seven voyages to the Western Seas and conducted trade with all countries. However, only a few people know that the real mission of this fleet is not trade and diplomacy, but to suppress the terrifying existence that is ready to move under the deep sea.
According to legend, Guixu is the abyss of the ocean, swallowing up all living things and time. Six hundred years ago, Dayu used flesh and blood as a sacrifice to seal the gate to the ruins. Now, the seal has been loosened and the mosasaurus has awakened. Only the secret technique guarded by the Zhenhai Division for generations and the cinnabar cannon of the treasure fleet can temporarily prevent the catastrophe.
