In Manhattan, a bike messenger picks up an envelope that attracts the interest of a dirty cop, who pursues the cyclist throughout the city.

Seeking to raise his credibility as an actor and to land a role as a tough cop on a new show, Hollywood action star Nick Lang works a deal with New York City Police Capt. Brix, who by chance is one of his fans. Nick will be paired with detective Lt. John Moss and learn how to act like a real cop. But when Nick drives John crazy with questions and imitating him, he gets in the way of John's pursuit of a serial killer.

Teenage lovers Tony (Richard Panebianco) and Tyan-Hwa (Sari Chang) tip the balance of power in New York's Little Italy and Chinatown.

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.