Arabella and the other kids were in the human area as they watch Fowler through the transmission on the screen.

" PRIME!" It was Agent Fowler sitting in a jet. Optimus entered the room, seeing the liason on the screen. " Special agent Fowler? To what do we owe - " 

" What else? 'Cons!" Fowler shouts, interrupting Optimus, " I chased them off with some hard ordnance, but not before they blew me out of the sky."

" Again?" Miko commented as both girls were snickering which luckily the agent didn't hear them.

" They tried a smash-and-grab for the DNGS " Fowler said annoyed which Arabella tilted her head, wondering what the DNGS was. Luckily, Arcee asked the question to her confusion, " The...What's it?" she asked, furrowing her optic ridges.

" Dynamic nuclear generation system, AKA, DNGS," Fowler explains as he puts up the footage of the metal box. "It's a prototype energy source I'm porting to the coast for testing."

" That's absurd." Ratchet scoffed, " Why would Starscream bother with such primitive technology?"

" I'm guessing to make a big fat primitive weapon of mass destruction. If this baby were to melt down, it would irradiate this state and the four next door. " Fowler explains as the four kids widen their eyes over the information.

" Uh... Did agent Fowler say what state he was currently in? " Raf nervously said as the witch patted his back in reassurance.

" I'm a sitting duck here, prime. I need you to spin up your bridge and send the DNGS to its destination before the 'cons come back for it." Fowler said, not liking the predicament of the situation.

" I'm afraid that sending such a volatile device through a ground bridge is out of the question." Optimus grimly explains, " If there were to be an accident during its transmission, the radiation of which you speak could propagate through the ground bridge vortex and harm all 50 states... And beyond."

" You got any better ideas?" Fowler asked which Arabella thought of one as she raised her hand, gaining all of their attention.

" I got one. What if we all acted as a convoy to protect the nuclear weapon " Fowler and Optimus agreed to her idea and began to get ready for the mission.

The Autobots and the witch helped Fowler place the DNG in Optimus's trailer, Arabella placed a protection spell on the device.

" Okay one more thing Prime ... WHY IS THE DICKIN'S MY GOD, DAUGHTER, WITH US!!!!" he screamed, Arabella winced as she climbed in and sat on the passenger seats. Optimus seemed unfazed by her godfather's screaming but concerned for her safety during the convoy mission.

"Okay one, I have magic to protect us and two it will look like if we are on a father and daughter road trip to others " she explained as Fowler groaned but knew she had a point.

"It's my job to protect you. I made the promise to your parents that I'll protect you ever since I became your godfather" he said as Arabella warmly smiled at him. " Now it's my turn to help you," she said as he smiled back and nodded before getting serious and about to grab the steering wheel.

" Ah! No need, agent Fowler." Optimus stopped the man before taking control "I will handle the driving." This made Fowler sigh and Arabella hide her laughter.

" It's going to be a long trip " Fowler sulked as Arabella rolled her eyes before nudging him.

" Autobots, roll out !" Optimus commanded as Bulkhead and Bumblebee reeved their engines and followed behind their leader.

" We are locked on to your coordinates, Optimus "  Ratchet said through the comms, " Barring any complications, you should reach the dropoff point by sundown." The kids watched but Jack couldn't help but worry about Arabella's safety, " I'm worried about her "

" She'll be fine and besides she's a con-kicking witch," Miko says as Ratchet couldn't help but feel concerned and protective for his charge, his spark weighing in concern and hoping she'll be alright.

The road trip was going smoothly until her godfather was honking at the driver in front of them. Arabella sunk into her seat, embarrassed by Fowler's actions " Move it, Gramps! " he shouted in annoyance. The poor driver pulled over allowing them to pass but he kept on honking until Arabella smacked him on the shoulder.

" Seriously, that poor guy's car looks run down, and yet your honking at him" she huffed as Optimus agreed with her. " Agent Fowler, is that really necessary?" he asked.

" Ah, don't tell me you're one of them textbook drivers" he pouted as Arabella shook her head, not the first time seeing his grumpy but childish behavior.

" Now I'm scared when you wait for an old lady to cross the road" she slightly joked but earnt a light flick on her forehead from her godfather.

After a while, Fowler pretended to drive as Arabella was twirling her wand around. " You know, you're saving my bacon here, prime" Fowler said as Arabella stopped what she was doing and listened.

" I am proud to be of service " Optimus replied.

" 'Course, not like I'd need your help if you and the 'cons had stuck to tearing up your own corner of the galaxy," Fowler replied.

" Are you suggesting that no evil existed on your world before we arrived? "

" There's always going to be evil everywhere but as well good, it's like from light comes darkness, and from darkness comes light," Arabella says as everyone heard the girl, surprised she held such wisdom in her words.

" How about some radio? You seem like a Nashville-sound kind of guy," he suggested, changing the subject but the moment was ruined when they heard a helicopter. Fowler and Arabella looked through their own blind spot mirrors.

" That's the one! The 'con who shot me down! Who is he? Wingnut? Dingbat? Skyguy?" Fowler exclaims. 

" Watch your rear view " Bulkhead warned through the comms as the cars surrounded him, " Feeling a little constricted without the use of my fists here, boss."

" Remain in vehicular mode unless absolutely necessary " Optimus ordered.

The cars were green but Arabella furrowed in thought ' Weren't the Vehicons purple?'. She watched as Bulkhead was surrounded by them.

" A whole team of 'cons " Fowler muttered, 

" What? I'm not picking up anything. They must be utilizing a cloaking technology " Ratchet explains, as one of the green cars blocks Bee in front of him.

Arabella readied her wand, " Unless these guys are not cons but humans" she said as one of the cars pulls up from Fowler's side as the sunroof opens up to reveal an armed man pointing a gun at them, " Pull over!"

" Well, I'll be dipped! " Fowler cursed,

" Fowler duck!" Arabella shouted, pointing her wand at the armed man, " Stupefy!"
A blast was emitted from the wand, knocking the man off course.

 "Who are these guys!" Fowler exclaims as Arabella looks behind to see that they are surrounded.

" Autobots, maintain your cover and apply minimal force. Disarmament only." Optimus ordered as the witch watched one of the green cars catch up to them but Bee bashed into them, causing the men in the car to swerve out of control.

Soon Optimus went around the sharp curves, jolting Arabella and Fowler inside. Arabella held the grab handles tightly but Fowler began to feel unwell from the movements.

"Could use some air" he gasped, trying to keep his lunch inside. Optimus opened the window as Fowler breathed in the fresh air only to see one of the men climb out and jump between Optimus and his trailer, about to disconnect it.

"Prime! Bear right!" Optimus tries to shake off but only managed to send the car tumbling down the hill, the man was still on and trying to disconnect them.

" Arabella you stay here" Fowler warned her as he climbed out of the door and made his way through the gap. He grabbed the man and held him at the edge of the truck.

" You're gonna tell me everything I want to kno-" but the man punched Fowler and jumped off the side. Arabella saw Fowler climb back inside and she was relieved that he was okay.

The walkie-talk went off as both of them listened" I do hope you take better care of the DNGS than you do your captives " a male voice said.

" Special agent William Fowler here. Identify yourself! " Fowler said, agitated as Arabella was listening in as well.

" I am Silas. But of greater consequence to you, we are MECH"  Silas said, "Fair warning -- We will be helping ourselves to your device, even if it means inflicting casualties"

Arabella narrows her eyes, gripping her wand of how people in the world would willing to do anything for power. " Is that so? Tell me, Si, what's the market price for a DNGS these days?" Fowler's voice interrupted her thoughts, waiting for Silas' response.

" What makes you think we intend to sell it, agent Fowler?" Silas said, " There's a war brewing between the new world order and the newest. The victor will be the side armed with the most innovative technology"

Arabella looked through the mirror to see one of the cars behind the trailer, they shoot explosives at it causing the door to open. One of the men slowly walks to the trailer.

" So, Si... You think mech has all the most radical tech?" Fowler taunted as Arcee drove out of the truck, hitting the man and making the car crash into the mountain.

" Later Si " Fowler said smugly and hang up.

Agent Fowler, do not take your "Silas" lightly" Optimus advised. "Megatron preached the very same ideology before plunging Cybertron into the great war that destroyed our world."

" Optimus, prepare to initiate phase 2." Ratchet informed them on the comms, "Five miles ahead, to the South, you will reach the rendezvous point."

" Understood Ratchet" Optimus informed, Arabella's face became serious as they arrive at the railroad ahead.

A/N: Finally done!!! Sorry for the long update. I decided to spilt the convoy chapter into two parts since it feels easier for me to write. Part two will be coming soon.

Thank You for reading, commenting and voting! Hope you enjoy this tfp x harry potter crossover fanfiction