john shaft, a private detective, is warned that some gangsters are looking for him. police lieutenant vic androzzi meets with shaft. androzzi unsuccessfully tries to get some information on the gangsters. when androzzi leaves, shaft sees one of the men waiting for him in his office building. he brings the first gangster into the office. the second gangster is waiting there. after a quick fight, shaft avoids one of the gangsters, who goes out the window. the other gangster surrenders and tells shaft that a man named bumpy jonas wanted a meeting between him and shaft. jonas is the leader of a harlem-based organized crime family,