QUOTE(Fortress Ironhold @ Oct 10 2009, 12:19 PM)

Alternatively, her dad could have gotten himself in hot water with an organized crime outfit of some sort. Mikaela has had to "disappear" for a while, ostensibly because she's breaking up with Sam, in order to straighten everything out. For this, the twist could be that the syndicate is somehow in league with the Decepticons; the broker is Swindle, who is acting on behalf of the other Combaticons. Bailing Mikaela out of danger means stopping one of the most ruthless Decepticon teams out there, a team so ruthless that the Autobots may end up needing to locate a gestalt team of their own (the Aerialbots?) just to be on equal footing. If Megan Fox is still being utterly jerkish to everyone at this point, he can have it that Onslaught or the head of the syndicate shoot her down right at the end of the battle in order to extract at least some degree of revenge for the Autobots winning; it lets her character die with a degree of dignity and in a believable fashion.
I just figured out how this could work.
Sam nervously makes his way home from college. Right as he enters the door, he is greeted by his old man, who wants to know about a mysterious $500+ charge to the "for emergencies only" credit card he gave Sam. Just as Sam is about to explain, when his mother interrupts. It seems that something from Mikaela came in the mail.
Sam opens the letter and is horrified to find that it's a "dear John" note; she wants nothing more to do with him, and would be rather furious if he tried to follow her. Sam has a massive breakdown and is about to rip the letter apart when he notes that the return address and the post mark are from two different locations: while the return address is her house, the post mark is from somewhere in New Mexico. Sam, not right in the head, decides upon an impromptu road trip, dragging along Bumblebee, Wheelie, and a few human pals in the process.
As furious as his parents are for him running off without even telling them, Optimus is even more upset; something important is about to happen, and having Sam & co. draw unwanted attention will only make matters worse. That "something" is a shuttle containing a large number of Autobot civilians and a very meager security force (Magnus, Red Alert, Tracks, Windcharger, Kup, Hot Rod, Blurr, and the Aerialbots). The shuttle is set to land at Area 51, and Optimus fears that if the group make too much noise it'll alert any nearby Decepticons that something is wrong. Although he doesn't want to risk splitting up his forces, he orders Ratchet to take a detachment and go on a retrieval mission.
Sam & co. arrive in town after a considerable drive time. Whereas everyone else wants to simply find a motel and sleep the ride off, Sam is on his feet and asking around. That no one seems willing to give him a straight answer infuriates him, and causes him to lose what little bit is left of his cool. He is about to do physical violence to someone when he sees what appears to be Mikaela's father (who he met between films) driving past. Totally gone at this point, he rounds everyone back up and has Bee follow the car.
They trail it to an abandoned factory building, where inside a meeting is taking place. It turns out that Mikaela's father took out a "loan" from the wrong people. In exchange for letting him live, he has to steal for them. Cars, guns, cash; whatever he can get his hands on so long as it equals out to what he owes... plus interest accrued. Mikaela is there with him, helping to steal (and, it's implied, do other things) in order to get additional money. The car her father was driving was but the latest in "acquisitions" he has had to make.
Sam is about to intervene when the others stop him. They point out the fact that behind the apparent ring-leader is a jeep with a heavy-caliber machine gun; if everyone rushes in without a plan then someone could get killed. Sam reluctantly agrees to sit and watch, although it eats at him to see Mikaela and her father get escorted out of the main area.
The group keep up their vigil for a little while longer, at which point the "jeep" and the ringleader - thinking themselves to be alone - start talking. The "jeep" is actually Swindle, a notorious conman. At Swindle's OK, four other military vehicles show up. Bee and Wheelie recognize them as the Combaticons, a group of Decepticons so mercenary and vile that even Megatron was rumored to be afraid of them. When Onslaught pays for the vehicles and weapons in gems, everyone puts it together. Sam orders Wheelie and the others to run and get the police, while he and Bee stay back in case trouble brews.
Unfortunately for everyone, they missed the fact that Barricade was on patrol. This leads to Sam and Bee having a rematch so as to buy the others time. The Combaticons, thinking that they've been sold out, vaporize the ringleader, steal what they can carry, and run off. The remaining members of the gang, thinking that the Decepticons have betrayed
them, hustle Mikaela and her father away.
Wheelie and the others manage to get some distance between them and the factory, only to find themselves pursued by other Decepticons: Roller Force, Motorhead, and Ground Hog. They are saved when a news van pulls up and beckons them to get inside. As they do, they find that the van is empty. The van introduces itself as
Dataframe, part of a team sent to retrieve the others. He immediately hits the gas and runs, broadcasting a wide-band alert as he does so *and* sending another signal to the local police department. Just as the three Decepticons close in, they get broadsided by Ironworks, Sideswipe, and Sunstreaker. The three Autobots quickly demonstrate that they aren't playing around, and soon separate the Decepticons from their sparks.
Meanwhile, the staredown between Bee and Barricade ends up at a standstill. This is broken when a mysterious fog rolls in, allowing Bee and Sam to "acquire" some of the dropped weapons. Barricade ends up getting tag-teamed by Bumblebee and Smokescreen, and gets put down for good. Smokescreen then informs everyone that while the Decepticons went one way, the humans went the other; teams are after both. Sam demands that he and Bee be allowed to go after Mikaela. Smokescreen relents and tells Dataframe to follow; he and the other three will try to stop the Decepticons.
However, the Combaticons aren't alone - Ransack, Bludgeon, Dirt Boss, and a few others are with them. Skids, Mudflap, and Blaze Master attempt to slow them down, only to get slagged in the process. Optimus, realizing the danger, orders everyone to a defensive stance; he, Whirl, Ironhide, and the girls dig in for what appears to be a harsh battle.
Meanwhile, Ratchet and Springer catch up to the convoy. Behind them are a line of police cars, who are soon joined by Bee and Dataframe. The syndicate members panic, and so when the lead car in the group (which has Mikaela's father) has a blow-out, the driver loses control; it flips off the road. The other members completely lose it. They halt their cars dead and get out, intending to use Mikaela as a hostage. This results in a stand-off between the police and the members. Simmons inadvertently breaks the stand-off when he loses his patience and orders the other S7 operatives inside Springer to rappel down and intervene. Mikaela sees the opportunity and tries to run, only to be shot in the back by the guy holding her hostage. Sam snaps, draws the pistol he grabbed back in the factory, and empties the clip into the shooter. The rest of the police open fire, mowing down the syndicate members. Simmons tries to snap Sam out of it, only for Sam to pistol-whip him and call him an "idiot" before running over to Mikaela; he's just in time to see some of the operatives using Ratchet's medical gear to try and save her.
The Decepticons arrive, and an epic battle ensues. However, the Combaticons are too much for the Autobots. When the shuttle comes in early, the Combaticons merge into Bruticus and blow it out of the sky. Before they can celebrate their victory, however, the Decepticons get strafed by the Aerialbots. Ultra Magnus then comes up in carrier mode, with Red Alert, Tracks, and Windcharger in tow. The Aerialbots merge into Superion and battle Bruticus, while Magnus' team flanks the Autobots. The arrival of Smokescreen & co. only seals the deal, and the Decepticons all die. Magnus explains that when he got the message, he ordered everyone to abandon ship some miles west of the site and then send the shuttle in on remote control; as soon as everyone was back together and he had a chance to post a guard, he came with reinforcements.
Unfortunately, not all the news is good. While Blazemaster can be fixed, Skids & Mudflap are KIA. Additionally, Mikaela died on the operating table and her father was killed in the roll-over. While the civilians are all safe, it came at a terrible price.
The movie ends with everyone leaving the funeral for Mikaela and her father. Sam, alone save for Bumblebee and Wheelie, walks over to her grave. In the process, he reveals what he plunked down that money for: an engagement ring. He and Wheelie sit on Bee's hood, contemplating what to do next. Bee breaks the tension by playing some prog metal, causing Sam to realize that the best thing he can do is get on with his life.