After Ladybug and Optimus Prime defeated Monarch and Megatron, they retrieved the Miraculous from Gabriel by making a wish to revive Emilie, Paris is saved, the Miraculous Team has been restored but Lila is still in hiding with her new identity Ceri...
In the river, a mysterious Transformer emerged and spotted his squad arriving at the streets then they all transform into their 24ft robot modes.
Sweep #1: Spread out! Push right!
Sweep #2: Alright. Roll, roll, roll, roll. Give me two. Give me two.
Sweep #3: Give me status, Take the streets nice and easy.
Then the squad known as Terrorcons Sweeps splitted in teams and started searching around the unknown area they're in, the first trooper informed.
Sweep #1: I have good news and bad news.
Sweep #4: Which is?
Sweep #5: I think the good news is we found the key.
Sweep #6: And the bad news?
Sweep #7: The bad news is the Autobot signal is near the key.
Sweep #3: Let's just blow it up to find that Autobot and kill him.
The Sweeps started activating his bomb then placed it in the abandoned building.
Sweep #1: Cracking steel!
The abandoned building explodes as the Autobot Wrecker Trailbreaker is forced out of his hiding spot.
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Trailbreaker: No!
Sweep #1: Hit him, hit him, hit him!
The Sweeps started shooting at Trailbreaker.
Sweep #9: He has the 2 keys, kill him.
Sweep #4: Fire.
Sweep #5: Missiles out. Danger close.
The missiles hit the building but missed Trailbreaker as he got out.
Sweep #1: He's running! Move!
The five teams started following Trailbreaker who transformed into a Black Hummer H1 and driving off fast.
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Sweep #5: He's on the run! He's on the run!
The Sweeps shoots at Trailbreaker, as he transforms back into his robot mode, but they shoot his leg off. Trailbreaker stuggles to stand after having his leg shot off with such big force.
Trailbreaker: No! Please! Hold your fire. Hold! Hold fire! Can you not see? I've been injured.
Sweep #7: Box him in. Box him in.
Trailbreaker: Autobot Wrecker Trailbreaker. I'm a friend! I'm an Autobot.
Sweep #1: Then why are you running?
Trailbreaker: Because I have the Transwarp key and I lost it.
Sweep #1: If you lost the key, you got no sympathy from me.
Then an unknown Transformer activated his arm cannon, aiming at the Wrecker.
Trailbreaker got hit by the shot, damaging him as the Terrorcons started firing at him.
Trailbreaker started firing at the Terrorcons but he was overpowered and his blasters are all destroyed.
Then Scourge arrives at the scene drawing his arm blade out.
Scourge: He's mine now.
The damaged Wrecker noticed the Leader of the Terrorcons.
Trailbreaker: Scourge.
Scourge: Autobots, Decepticons, always fighting each other. And now I will end Earth with my Machine.
Trailbreaker: I see.
Scourge: There is one way you survive. Tell me where it's hiding. Where is the Transwarp Key?
Trailbreaker: I have it, but you will never use the Machine.
Scourge: Then so be it!
Scourge used his arm blade and stabbed Trailbreaker until he forcefully ripped his spark out of his chest, killing him.
Then he noticed the key laying next to the Autobot corpse as the 26ft bot named Stinger who looked like Bumblebee but red picked it up.
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Stinger: One down, 3 more to go.
Scourge: Then we will leave.
The second in command of the Terrorcons named Stinger ordered.
Stinger: You heard him, we are leaving. Leave the body.
As Scourge transformed into his Peterbilt 359 Logging semi truck mode.
As for Stinger, he transformed into a Pagani Huayra hypercar.
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And the Terrorcon teams transformed back in their alt modes, driving off as soon the sun rises Trailbreaker's corpse will change everything.
But the other that Trailbreaker flew out of his hand is in the air and it crash landed in Marinette's window waking her up.
