Agents J and K are back...in time. J has seen some inexplicable things in his 15 years with the Men in Black, but nothing, not even aliens, perplexes him as much as his wry, reticent partner. But when K's life and the fate of the planet are put at stake, Agent J will have to travel back in time to put things right. J discovers that there are secrets to the universe that K never told him - secrets that will reveal themselves as he teams up with the young Agent K to save his partner, the agency, and the future of humankind.
Will Smith
as Agent J
Tommy Lee Jones
as Agent K
Josh Brolin
as Young Agent K
Jemaine Clement
as Boris The Animal
Emma Thompson
as Agent O
Michael Stuhlbarg
as Griffin
Mike Colter
as Colonel
Nicole Scherzinger
as Boris's Girlfriend
Michael Chernus
as Jeffrey Price
Alice Eve
as Young Agent O
David Rasche
as Agent X
Keone Young
as Mr. Wu
