Hey, I didn't think THAT far ahead...b'sides, everybody knows most third acts usually suck.
O.K. how about this for TF3: under Galvatron's direction, the Decepticons have been laying waste to major cities in a bid to draw out the three remaining Autobots. Galvatron leverages humankind's fate in an attempt to co-erce Lennox's team into capturing (and preferably destroying) Goldenrod, Arcee, and Jetfire - but demands that Sam be brought in alive at all costs, having determined that he now shares a psionic link to the young man as the result of their shared exposure to the Allspark. Galvatron has realized that any human that could contain even a fragment of the Allspark's power could augment his own considerably, and plans to "upgrade" Sam into a bio-mechanical minion - a "Minicon", his underlings playfully describe it - who can interface with Galvatron's internal systems enough to strike at Unicron when the Chaos-Bringer least expects it. It is during an early surprise attack on the Autobots by Soundwave that Sam is captured and the Autobots are finally detained by Lennox's crew.
Realizing that Sam's hallucinations may be tantamount to something far greater, Mikaela risks her own life to break into the Arctic encampment where the Autobots are awaiting termination, impersonating an officer and liberating the captured Autobots - with a little help from Lennox, who has been monitoring the entire exercise - and Goldenrod resolves to infiltrate Galvatron's stronghold atop Devil's Tower (a Spielberg nod there, as well as an ode to the 'Con's mountaintop fortress in the old Marvel comics - an appropriate location, don't you think?
) to save his friend. In the escape, Cyclonus engages Jetfire and the two plummet into the glacial shelf, ending in a massive explosion caused by Jetfire detonating his munitions store, leaving only the smoldering skull of Cyclonus tumbling back to the earth (a combined nod both to Jetfire/Skyfire's animated origins, and to Cyclonus' fate in "Time Wars").
At this point, four more protoforms crash to the Earth, alarming Galvatron, who's already started subjecting Sam to the painful process of bio-conversion. These three are Autobots, of course - Impactor, Magnus Springer, and Whirl. To destroy the new Autobots, Galvatron decides to make an example of Lennox and his men for their "failure" to contain the Autobots by subjecting them to one of his other "experiments" - a electrochemical airborne virus created from Starscream's salvaged spark (echoing both the creation of BW Rampage and even hinting at the whole 'Starscream's ghost' bit and the Hate Plague from "The Return of Optimus Prime"), which mutates the unit into living batteries of hatred so powerful they cause their vehicles to assume beast-like forms that put Scorponok to shame - thus enabling Galvatron to almost replicate the same creation process that the Allspark was capable of, and compelling him to work even more fiercely to complete Sam's "transformation".
Impactor, Magnus, Springer and Whirl - having chosen their alt-modes of an armored car, a car-carrier, a Hummer, and a helicopter, respectively - meet up with Goldenrod and Arcee in a feverish chase/battle sequence that takes care of Soundwave and half the Seekers. Both under attack by the hate-infested human/vehicle hybrids, the Autobots and Simmons's unit aren't left with much more choice but to put protocol aside and make their final stand at Devil's Tower, where Bruticus is waiting. It's at this point that Magnus reveals a surprise tactic - merging with his carrier trailer to form a power-armored robot identity, Ultra Magnus - which proceeds to tear into Bruticus and the remaining Seekers with the aid of Springer and Whirl while Goldenrod, Arcee, Impactor, Mikaela and Simmons sneak into the tower and finally do away with Soundwave and Scourge at the cost of Impactor's life.
Mikaela and Arcee are separated from the group, forced to lure an ARMY of Scorponok clones out into the battlefield in an effort to destroy them, while Goldenrod and Simmons are forced to confront the horror of what is left of Sam - a humanoid hulk of metal which Galvatron has already attuned to his own Allspark interface, in the midst of brainwashing him. A duel begins between Autobot and Decepticon, culminating in Goldenrod being crippled by a devastating blow. In a bid to distract Galvatron from finishing the job, Simmons is vaporized. This act snaps Sam out of his agonized stupor and, having defied all of Galvatron's efforts to reprogram him, Powerlinks himself to Goldenrod, in doing so reformatting the Autobot one last time - and a familiar voice echoes: "Rise...RODIMUS PRIME."...
The final duel causes Galvatron to be blasted into ashes by the new Autobot commander, the Decepticon's remaining Allspark energy absorbed by Sam, who channels it into the man-mech army and restores them. Knowing Earth will never be safe as long as a single Transformer remains on it - himself included - Sam bids Mikaela an emotional goodbye and, with the Allspark's power at his command, refashions the fortress into a floating Autobot stronghold - Fortress Maximus - which returns to the stars with the Autobots aboard to ensure that Earth will finally be free of Unicron's corruption, and that the planet-eater never regains his full power.
...See? I warned you.
Transformers 2 Plot: (Does not include Dino-bots and shouldn't include them.) This movie should be much like Empire Strikes back in Star Wars, there should not be a true ending to it.
