New York, September 5, 1953. The mafia runs rampant throughout the country, drugs flood the street, and criminals strike with impunity. Four FBI agents - Philip Lloyd, James Chandler, Eddie Carlton, and Gary Cougar, each one bringing special expertise - decided to take it upon themselves to clean up a city taken over by gangsters. After having suffered personal loss at the hands of the hoods, the four agents decide to find the big boss and eliminate him, which involves finding his various henchmen and interrogating them.
Each of the eight stages in the game is a fixed location, and has the player killing a certain amount of gangsters within a time limit to proceed to the next stage. Dead gangsters usually leave behind their wallets and briefcases, giving players major point bonuses. The player can also interact with the environment. For example, certain objects can be blown up, revealing illegal ledgers, weapons, drugs, and counterfeit money; and the player can climb up and down ladders and shoot gangsters at different angles.