New York gangster Ben ‘Bugsy’ Siegel takes a brief business trip to Los Angeles. A sharp-dressing womanizer with a foul temper, Siegel doesn’t hesitate to kill or maim anyone crossing him. In L.A. the life, the movies, and most of all strong-willed Virginia Hill detain him while his family wait back home. Then a trip to a run-down gambling joint at a spot in the desert known as Las Vegas gives him his big idea.

In New York, racist Capt. Stanley White becomes obsessed with destroying a Chinese-American drug ring run by Joey Tai, an up-and-coming young gangster as ambitious as he is ruthless. While pursuing an unauthorized investigation, White grows increasingly willing to violate police protocol, resorting to progressively violent measures — even as his concerned wife, Connie, and his superiors beg him to consider the consequences of his actions.