During the Ming Dynasty, the emperor's uncle, King Wu, conspired with foreign nations to usurp the throne. The evidence of treason was the key to an arsenal and was related to the rise and fall of the country. Due to an oolong coincidence, the protagonist, who pretended to be a secret agent, was involved in a battle for the evidence. The rise and fall of a country is the responsibility of every citizen. The protagonist finally joined forces with the secret agents, seized the evidence in one fell swoop, exposed King Wu, and defended the country.