Traveling back in time to 1950, I worked as a household registration policeman. I wanted to make a living by fishing, but unexpectedly I was bound to a spy radar. Within five hundred meters, all those who are hostile to me are spies! Deciphering codes and instigating spies were all unconventional, and the spies were forcefully forced to line up and surrender. The foreign enemies are trembling, but I only care about: how to catch spies, get promotions and raise salaries all the way.