Bill Hader, Jack O'Connell, Tony Shalhoub, Michael Stuhlbarg, Tommy Lee Jones, Will Smith, Emma Thompson, Jemaine Clement, Jada Pinkett Smith, Alice Eve, Josh Brolin, Keone Young, Jared Johnston, Mike Colter, Joel Brady, David Rasche, Lanny Flaherty, Will Arnett, Tobias Segal, Lenny Venito, Jason Liles, Joseph D'Onofrio, Ian Blackman, Will McLaughlin, James Martin Kelly, Alex Ziwak, Michael Chernus, Ken Arnold, Rick Baker, Chloe Sonnenfeld, Barry Sonnenfeld, Tim Blaney, Carl J. Johnson, Thom Fountain, Brad Abrell, Alexandra O'Hara, Nicole Scherzinger, Cayen Martin, Clarke Thorell, Adam Mucci, Tom McComas, Douglas Crosby, Woodie King Jr., Jon Shaver, Gerritt Vandermeer, Violet O'Hara, Valence Thomas, Jonathan O'Hara, Joseph R. Gannascoli, Katy Frame, Kevin Townley, Stephen Brian Jones, Tyler Johnson, Kati Rediger, Victor Joel Ortiz, Charlie Barnett, Jeremy Beiler, Liliane Klein, Britt Chandler Johnson, Jonathan Drew, David Pittu, Anthony J. Gallo, Kimmy Suzuki, Kirk Larsen, Javier Rivera, Susan Ringo, Stephanie Ellis, Ben Mac Brown, Amy Erwitt
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.