Seasons & episodes
S4 · E9The Virtual Crossfire Syndrome 2001-05-05 · 30 min
Jay gets a low score on MIB's new virtual reality training test and the embarassment eventually forces him to try again. But this time the game goes haywire and the dangers Jay faces become deadly.
S4 · E10The Breaking News Syndrome 2001-05-12 · 30 min
An alien tv crew comes to Earth to film MIB agents on the job just as Drekk returns to cause trouble.
S4 · E11The Zero to Superhero Syndrome 2001-05-26 · 30 min
A super hero caling himself Cosmosis emerges to defend the city from evil, but he's really an alien looking to put his powers to good use. However, MIB feels his new profession could attract trouble for Earth, so they try to lure him out using Jay as bait.
S4 · E12The Endgame Syndrome, Part 1 2001-06-23 · 30 min
Alpha, Vangus and the Ixions return to Earth, working together to threaten all life on the planet. With invasion imminent, Zed decides to reveal MIB's existence to the world.
S4 · E13The Endgame Syndrome, Part 2 2001-06-30 · 30 min
With MIB having success in coordinating resistance against the invasion, the Ixions plan to unleash a weapon that will kill everyone on Earth. Jay and Kay will fight Alpha in the final battle for humanity.