In the twenty-sixth year of Jiajing, maritime bans were strict, military preparedness in coastal garrisons was lax, and officials colluded with pirates and foreigners, making life difficult for coastal residents. A modern anti-narcotics team on a cross-border mission encountered an ambush, accidentally fell into a spacetime rift, and descended upon the South China Sea of the Ming Dynasty. Trapped in an unfamiliar era, relying on modern vision and limited equipment, the team maneuvered among various maritime forces. They opened maritime trade routes, exchanged overseas goods, and in the process of protecting coastal residents, brought brand-new coastal defense perceptions, quietly influencing the maritime territory pattern of the Ming Dynasty.