Moscow policeman Captain Ivan 'Iron Jaws' Danko (Arnold Schwarzenegger) is on the trail of Russian drug dealer Viktor Rostavilli in the USA when he is ambushed by the dealer's gang. When Rostavilli makes his escape, an American cop is killed. Danko teams up with the dead cop's partner (James Belushi) in a bid to complete his mission, but the resulting culture clash between East and West causes various hilarious problems.