When Viktor (Ed O'Ross), a narcotics kingpin from the USSR, escapes from prison and heads for Chicago, Russia's brawniest, most fearless and most disciplined police detective (Arnold Schwarzenegger) follows Viktor to the Windy City and teams up with a loud-mouthed American cop (James Belushi). Together, the mismatched, culture-clashing, rule-breaking duo must overcome their differences and attempt to track down the nefarious Viktor.