Lethal Weapon 4 starts with the revelation that Riggs will be a father and Murtaugh a grandfather. There is a harder edge: The movie's plot revolves around the smuggling of Chinese immigrants and counterfeiting of Chinese currency. After trying to harbor innocent immigrant families, Riggs and Murtaugh find themselves in the middle of a Hong Kong gang war. Chris Rock joins the fun as amped-up detective Lee Butters, dispensing some of the funnier lines in the series. In an attempt to marry the kinetic energy of Hong Kong martial arts movies with the more familiar tropes of American action films, Jet Li is cast as the head bad guy.
