In the middle of the 19th century, on the dirty streets of New York, a fair part of which were slums, there was a constant war - local residents against Irish immigrants, Protestants against Catholics, bandits and thieves against everyone else. It was during this difficult time that the mayor of the city decided to create the New York police - from among strong and determined men of different nationalities and religions, ready to uphold the law at any cost. One of them was Timothy Wild, a former bartender who knows the local criminal world and its rules very well. And then he was entrusted with a very difficult task. A maniac began to operate in the city, slaughtering young Irishmen. People in the area began to say that the devil himself had appeared in the city...