After returning to Cybertron, Starscream assumes command of the Decepticons, and has decided to return to Earth with force. The Autobots believing that peace was possible finds out that Megatron's dead body has been stolen from the US Military by Skorpinox and revives him using his own spark. Now Megatron is back seeking revenge and with Starscream and more Decepticon reinforcements on the way, the Autobots with reinforcements of their own, may have more to deal with then meets the eye.

Cast:

• Megan Fox - Mikaela Banes
• Shia LaBeouf - Sam Witwicky
• Isabel Lucas - Alice
• Hugo Weaving - Megatron (voice)
• Josh Duhamel - Captain Lennox
• John Turturro - Agent Simmons / Jetfire
• America Olivo - Frisbee Girl
• Peter Cullen - Optimus Prime (voice)
• Frank Welker - Soundwave / Devastator (voice)
• Rainn Wilson - Professor Colan
• Anthony Anderson - Jolt (voice)
• Tyrese Gibson - USAF Tech Sergeant Epps
• Mark Ryan - Bumblebee (voice)
• Ramon Rodriguez - Leo
• Matthew Marsden - Graham
• Tom Kenny - Mudflap / Skids (voice)
• Samantha Smith - Sarah Lennox
• Darius McCrary - Jazz (voice)
• Tony Todd - The Fallen (voice)
• Glenn Morshower - General Morshower
• Kevin Dunn - Ron Witwicky
• Katie Lowes - April the R.A.
• Charles Adler - Starscream (voice)
• Reno Wilson - Frenzy (voice)
• Michael Papajohn - Cal
• Mike Patton - Mixmaster (voice)
• Aaron Hill - Frat Guy #1
• Julie White - Judy Witwicky
• Robert Foxworth - Ratchet (voice)
• Jess Harnell - Ironhide / Barricade (voice)
• John Benjamin Hickey - Galloway
• Jareb Dauplaise - College Frat Guy
• Karina Michel - Reporter
• Spencer Garrett - Air Force Chief of Staff McCain
• Peter Jason - Ceo
• Caitlin Dulany - CNN reporter
• Jonathon Trent - Fasbinder
• Josh Kelly - Strike Force Member #4
• Michael Benyaer - Egyptian Interpol
• Alex Fernandez - Lt. Colonel Cetas - Joint Chiefs Aide
• Rick Cramer - Diego Garcia #1
• Kortney Nash - Mozambiqua
• Steve Tom - McClaren Robotics CEO
• Walker Howard - Sharsky
• Sean T. Krishnan - Yakov
• John Nielsen - Captain Wilder
• Joel Lambert - Strike Force Member #2
• Derek Alvarado - Joint Op #1
• Jayson Floyd - Strike Force Member #3
• James Harvey Ward - Sonarman
• Casey Nelson - Joint Op #2
• Donald Sage Mackay - Nuclear Submarine Captain
• Cornell Womack - FBI Director
• Kamal Jones - Smithsonian Guard 2
• Zhubin Rahbar - Officer
• Ralph Meyering Jr. - NORAD General
• David Paul Olsen - Strike Force Member #5