The battle of Chicago is a huge battle consisting of Humans and Autobots VS the Decepticons. It started with the decepticon alien invasion of Chicago after Sentinel Prime activated the Pillars to teleport his Decepticon army to earth. The battle involves the United States Military, the autobots, NEST, the wreckers and the Chicago Police Department to fight against the decepticons.
The battle starts in Washington D.C., United States of America, where Sentinel Prime activates the space bridge to the moon, where hundreds of decepticons and their alien ships go through in order to teleport and arrive on Earth. The decepticons then launch an all-out assault on Washington D.C. killing civilians, destroying buildings and vehicles and attacking Law Enforcement officers and United States Military personnel. They spread out and scan their vehicles forms, and hide throughout the planet. Optimus Prime fights Sentinel, but loses. Sentinel spares him, for now.
2 days later, the decepticons and their alien ships arrive in Chicago and begin attacking it. They spend all night terrorizing the city, shooting buildings and killing civilians, destroying the city. The next morning, Sam meets Epps and together they gather up their old military buddies while they arrive in Chicago to save Carly. Ignoring the several civilians telling them to turn back, they enter the city. They begin to walk down an alleyway when they see two jets shot down. They begin to have second thoughts when suddenly a Medium Fighter flies out and begins shooting civilians. The fighter flies low and reconfigures right above Sam and Epps. It flies up again, but is shot down by a shot on the engine. Sam and Epps turn around, and Optimus is standing there, their savior. The Wreckers then walk out and rip the pilot apart, while the rest of the autobots arrive. They explain to Sam that they never died in the Xantium, they escaped. Sam and Bumblebee then use the fighter to enter the city.
Meanwhile, Carly watches Sentinel and finds out that Megatron is second in command, not first, where she gets an idea. Meanwhile, NEST rounds up many US Army Special Forces soldiers and uses V-22 Opsrey Helicopters to get them into the city. Unfortunately, a Small Fighter flies by, and shoots down one US Military helicopter, the helicopter collides with another US Military helicopter, destroying them both. The other helicopters fly low into the city and use the Willis Tower for cover. Starscream spots them near the Willis Tower and uses his saw to destroy the helicopters. The NEST Jump-suiters jump out, but several are killed or hit by the falling helicopters because of Starscream. The US Military jump-suiters glide deeper into the city, as the helicopters are destroyed. However, 2 small fighters spot them, and pursue them. They open fire, but the jump-suiters are too quick for them. Unfortunately, one jump-suiter slows down, and gets shot down by a fighter. The others fly into a partially collapsed building, and the fighters follow, however, the opening is too small, and the fighters are destroyed by the impact. The US Military jump-suiters survive, land, and group up to join forces with the autobots in the fight against the decepticons.
Meanwhile, Sam and Bumblebee arrive at Chicago Trump tower, where Sam enters and sneaks in, where he finds Dylan and asks him where Carly is. Laserbeak transformers, grabs Sam, and throws him out the window. Dylan walks away, but then turns around to see Sam riding the fighter calling for Carly. She jumps on it, just before the hijacked fighter aims all of its guns at Dylan’s bodyguards and his hideout, the Trump tower. Dylan Gould and his bodyguards duck, but despite ducking, all of the bodyguards are killed because of Bumblebee ripping up the floor with the fighter’s machine guns, with Dylan Gould being lucky to not be hit. Laserbeak flies towards it, then tosses a US Military UAV drone into the engine, and begins fighting Sam. Sam grabs Laserbeak by the neck, and tells Bumblebee to fire. He does, and the shot decapitates Laserbeak. The fighter crashes, while Sam Witwicky and Carly Spencer find the NEST Soldiers and the US Army Special Forces soldiers.
Later, the Wreckers find Shockwave and they open fire on him. However, Shockwave fights back, and the Wreckers evacuate. They unfortunately forgot Wheelie and Brains, which being to run from Shockwave. Bumblebee, Wheeljack, and Dino are unfortunately captured by Barricade, Soundwave, and several other decepticons. Dylan Gould has decided that the autobots must die just because of what Bumblebee did to him, so he tells the decepticons to execute all of the prisoners, and Soundwave agrees to do so. Barricade decides to kill Wheeljack first, while he pushes him into the open. Wheeljack tries to tell them if they could just sort it out, but he is sadly shot twice, where he dies. Soundwave then tries to shoot Bumblebee, while Sam tries to activate one of Wheeljack's Boomsticks, but it doesn't work. Bumblebee is about to be killed, until a falling fighter nearly smashes Soundwave, dropped by Wheelie and Brains. They stole Bumblebee's hijacked fighter, flew into a carrier ship, and were messing around with it. They drop the fighters on the decepticons, while Bumblebee kills Soundwave, and Barricade escapes.
Sam Witwicky and Carly Spencer go into hiding, but Starscream finds them. He goes after Sam, who hides in a bus. Starscream flips the bus, then cuts it. Sam runs, but slips. He then puts on Wheeljack's Grapple Glove, and fires it at Starscream's eye. he screams and flails Sam around everywhere, which is still hooked to Starscream's eye. Starscream jet-packs, screams and kicks everywhere, trying to get Sam off. He eventually throws Sam into a window, while Sam activates a Boomstick. He grabs it, and stabs it into Starscream's other eye, Now blind, Starscream is screaming and trying to kick Sam. NEST Soldiers arrive and shoot Starscream. Lennox tries to get Sam off, but Starscream was flailing too viciously. Bumblebee then arrives, grabs Sam and Lennox, and drives them away from Starscream, who blows up, and falls off the building.
Sentinel realizes that the autobots are trying to destroy the pillars, so he activates them immediately. They slowly rise into space, where they form a space bridge that transports Cybertron near Earth, slowly flying towards it.
Megatron orders several decepticon fighters to attack Optimus, and he is quickly overwhelmed. So NEST calls in a U.S. Navy ship, which fires multiple long-range tomahawk missiles into Chicago at the decepticon alien fighters, destroying half of the Decepticon fighters in the city.
Meanwhile, Sam, Carly, Epps, and other soldiers gather up onto a skyscraper to shoot at the pillars, trying to get a good shot at the control pillar. They climb to the top, and load the RPG. However, some large decepticon alien fighters begin shooting at the building, trying to topple the whole building. They stop, but more fighters come to investigate. The team hides inside, while a curious Decepticon pilot jumps inside. He looks around, but luckily doesn't see any of them. They throw some chairs to distract him, then Chuck throws a grenade at his feet. They distract him long enough to jump out the window and slide down the length of the building. They are nearing the end of it, while Epps tells them to shoot the glass. They do so, and they slide into the windows again and slide through the building. However, the lower floors are much more decimated, and it is harder to stand. The team slides down trying to stand up. They grab onto nearby objects and cords hanging form the ceiling, but one soldier is unlucky and falls out of the window to his death. Below, Shockwave notices the shrapnel pushed out of the window by the team and spots them. Epps lets the team know Shockwave sees them, until Shockwave sends in Driller. Driller proceeds and drills into the building. He slowly climbs upwards to the center of the building and begins to crush it, splitting the building in two. The team, in the upper-half, begin to fall again, while Driller completely splits the building. The top half crashes onto a nearby building, making a bridge. Driller drills into it, looking for the team, Luckily, Optimus jetpacks in and fights off Driller, until cutting his head off, killing Driller.
Shockwave fires at Optimus in anger, which hits him, and causes him to fly into a construction site, tangled in the cranes. The Wreckers rush to help him. Meanwhile, the NEST Soldiers plan an attack to defeat the remaining Decepticons. They use snipers to take out the eyes, then implanted the Boom stick on the feet, and shot them to death once the Boom sticks detonates, and they do so. Optimus is freed from the cranes and flies in, chopping and blasting multiple Decepticons, while a NEST soldier gets his parachute stuck on Shockwave’s head, the soldier falls, but lives. Optimus Prime rushes in, and uses his brass-knuckles to rip out Shockwaves eye, killing him. He then points Shockwave's gun at the Control Pillar, and fires. The pillar is hit, but it can still be activated. Sentinel climbs down from the building to fight NEST and the autobots.
Meanwhile, Carly finds Megatron, fallen from the building, where he is happy to see Cybertron again. Carly starts talking to Megatron, who almost kills her. But she tells Megatron that Sentinel is only using him as a slave and he isn't in charge of his army, and leader of the Decepticons. Megatron begins to slash at Carly, but then, he realizes, that she was right. Carly then leaves to find the others.
Sentinel calls out that they needed to re-activate the control pillar. Dylan hears this, and rushes to activate it. Sam fights him, but Dylan kicks him down. Dylan successfully reactivates the Pillar, bringing Cybertron closer to earth. Sam then grabs Dylan and throws him into the Pillar, Electrocuting Dylan, and killing him.
The autobots fight Sentinel, but he is far too defensive, protecting himself from all of them. luckily, Hardcore Eddie fires his only RPG at Sentinel, (which was supposed to be used on the pillar earlier, but was never used due to Driller). Sentinel collapses, which gives Optimus just enough time to fight Sentinel. Bumblebee then runs into the pillar and splits it in two, sending Cybertron back to its solar system, and sucking up all the remaining decepticon ships on Earth. Optimus, still fighting Sentinel, gets his arm cut off by Sentinel, who is about to stab Optimus Prime, who is luckily stopped by Megatron, who shoots Sentinel repeatedly, then rips off his head pieces, ordering that he is the true leader of the Decepticons. Optimus Prime stands up, while Megatron says "Where would you be without me"? Optimus answers by killing Megatron, and cutting off his head with his axe. Even though Megatron saved his life, Optimus knew Megatron will stop at nothing to get control of Earth.
Sentinel tries to explain to Optimus that he had to betray the autobots in order to save Cybertron. Optimus corrects him, and says he only betrayed himself, until he blasts Sentinel’s head off, killing Sentinel Prime.
Age of Extinction[]
The "Chicago Incident" is what primarily caused humans to believe that all Cybertronians are dangerous, Autobot or not.
A group of teenagers find a crashed Medium Fighter and attempt to pull it out of a hole with their pickup, but it proves too heavy. The leader of the group talks about its statistics, and stating that he will sell it for $70,000, (which is an EXTREMELY LOW price for an alien ship), while Cemetery Wind explains that there are actually several crashed Cybertronian ships all over the world, proving that there were some surviving Decepticons left, along with there ships. But it is also possible that the pilots were killed, either by Autobots or Cemetery Wind.
The Last Knight[]
Izabella's parents were two of the many victims of the Battle of Chicago. Cade Yeager told Santos the reason why humanity turned against the Autobots, was because the Battle of Chicago caused them to lose their faith on them. Those words led Santos made understand he was wrong about the Autobots all along. It is implied that after successfully saving Earth Autobots would be removed from the TRF wanted list and could possibly shame the United Nations and the whole world for losing faith on the Autobots after the Battle of Chicago along with their persecution acts that nearly destroyed Earth and almost cost the live of humanity because of Decepticons and Quintessa. U.S. government and UN would make Autobots legal again and later make amends and regain faith with the Autobots.
