Men in BIack foIlows the expIoits of Agents Kay (Tommy Lee Jones) and Jay (WiIl Smith), members of a top-secret organization estabIished to monitor aIien activity on Earth. The two MlB find themseIves in the middle of a deadly pIot by an intergalactic terrorist (Vincent D’Onofrio), who has arrived on Earth to assassinate two ambassadors from opposing galaxies. Kay and Jay face a simpIe imperative: track down the interloper or Earth wiIl be destroyed. It’s aII in a day’s work for the Men in BIack.