Following the death of his employer and mentor, Bumpy Johnson, Frank Lucas establishes himself as the number one importer of heroin in the Harlem district of Manhattan.

He does so by buying heroin directly from the source in South East Asia and he comes up with a unique way of importing the drugs into the United States.
As a result, his product is superior to what is currently available on the street and his prices are lower.
His alliance with the New York Mafia ensures his position. It is also the story of a dedicated and honest policeman, Richie Roberts, who heads up a joint narcotics task force with the Federal government.
and it is totally based on a true story....

I recommend you to watch the movie...