I don't own RWBY or Transformers Prime they belong to their respective owners. This fanfic is just for fun. Note *this* means that they are thinking so when you *see it* know that it is in their heads. When you see [this] it means Bumblebee is talking. Also, as I said in my past chapters the fanfic is going to be more canon. So when you read things that sounds much like the show don't jump the gun on anything. Again I don't own either RWBY or Transformers Prime this is just a fanfic for fun. And if you recall I had Vector Prime say that they will remember what happened as the show has it and will forget Ruby and what happened to her. So I have to go canon at some point.

Sorry for not posting new chapters long story short my Grandma got hurt and I had to stay over her house to help her and she has no internet.

Enjoy.

Before Ratchet could say anything Optimus cuts in. "Don't send anyone to me. He wants me, Ratchet. This fight must be mine alone."

Qrow looks at Ruby. "This is Tyrian all over again."

Ruby glared at him before looking at Ratchet. "From what I remember Megatron should be coming soon because Unicron got him mad which makes him want to help us. Which he is the only map to Unicron's heart. But it is going to take him some time to get there so we need to buy him some time."

Ratchet nodded his head and got everything ready for them to go help Optimus out. He then looked at Ruby again because he thought of something. "Ruby, you should stay here we don't know what would happen if Unicron sees you."

Ruby nodded her head as Ratchet opened a Ground Birge for the others to go through.

Meanwhile as Optimus fights for his life. He was starting to get tired and just when Unicron's army was about to make another move everyone but Ruby and Ratchet showed up and took down a Unicron clone. Which Optimus wasn't happy about. "Did Ratchet not relay my command? Return to base."

Seeing what had happened made Unicron mad. "Reinforcements will not prevent your destruction, disciple of Primus."

Raven looked at Optimus. "Optimus, you're Unicron's target."

Qrow joined in. "She's right, maybe you should consider returning to base."

"As I said before these manifestations of Unicron can locate me anywhere on Earth. Even our base's shielding would only cloak my position for so long. I will not put others at risk."

Glynda then cut in. "Then fall back and let us take the lead."

Arcee joined in. "Just this once."

Just then Ruby joined in thew the comlink. "Please! Listen to reason! If you don't survive, Optimus, I fear neither will this planet. You guy s just need to hold out until Megatron shows up."

"Very well."

Ironwood looks around. "Let's move."

And with that, they all start to make a run for it. But that plan wasn't working so well. Sun looked around at all od the Unicron clones. "It feels like the Fall of Beacon all over again!"

Pyrrha looked at him. "Just keep going we need to keep playing Prime keep away for as long as we can!"

Just then Penny heard something and looked to the sound. "Um...Guy...Look!"

Everyone did only to see a giant Unicron clone standing before them. To which BulkHead spoke up. "If we can't beat Unicron and we can't outrun him, what exactly are we supposed to do?"

Optimus then spoke up. "All we can do. Neutralize his vessels as they appear, until we find a way to destroy him without destroying the very Earth upon which we walk."

*Which sadly means we wait for Megatron.*

The group tried to take down the giant Unicron but nothing was working. Just then Unicron had Optimus pinned down. "I am this world's past and its future. And as of this moment"

"No!" Everyone yelled and Penny tried to help Optimus but Unicron grabbed her with his hand and had his blaster aimed at Optimus.

"As I was sawing all Primes are simply past."

Just then a blaster shot hit Unicron and everyone looked around to see what was going on. Arcee looked at Bulkhead. "Wasn't me."

[Me neither.]

Ratchet wanted to know what was going on alone with Jack, Miko, Raf, June, and Fowler. When Ruby had some idea what just happened. "What is it? What happened?"

"I happened."

Just then Megatron hit Unicron which caused him to fall apart he changed back to his bot form and caught Penny as she was falling. Once the two were on the ground he helped Optimus up.

"Megatron finally here."

"It would seem that you all knew I would come. I suspect that Ruby saw this coming. Speaking of the girl where is she?"

Qrow spoke up. "Primus added in a special cloaking on Matrix of Leadership so that it would keep people like Unicron to finding out Ruby is a Prime. But we don't know if it would hold out in a fight so she is staying out of this."

"I see... It doesn't matter what matters is defeating our shared enemy... Unicron, the chaos-bringer."

Optimus then cut in. "Which your pride would never allow anyone other than yourself to rule this planet."

"You know me all too well, Optimus."

"You lead an army of 'Cons."

"Why come to us?"

"I see Ruby didn't bring up everything yet. Because this particular endeavor requires something beyond the realm of my command... The power of a Prime."

Ironwood then cut in. "Which your the only one who can guide us to him. Unicron's lifeblood runs through you."

Megatron smirked at that. "That is true. I'm the only I can hear his thoughts, anticipate his movements. Optimus, our past alliances... Autobot, Decepticon... no longer matter, not while Unicron lives. The past always matters! A truce between Autobot and Decepticon."

"So this whole team up will last until our mutual problem is dealt with. And then you'll try to conquer this Earth again?

"That is true."

"Honesty from a Decepticon?"

Optimus then heard Ratchet from there comlink. "Normally I would say aligning with the lesser of two evils is still siding with evil. But from what Ruby has told us so far. We have no choice in this matter."

Megatron smirked at that. "Indeed we have not witnessed the full power of Unicron? Those foot soldiers were nothing more than a taste. Unicron has yet to fully awaken. With each passing moment, the "Bringer of chaos" evolves, mutating Earth from the inside out.
What we have witnessed until now is but a prelude of the utter devastation his rising will wreak upon your world."

Arcee then cut in. "Like your quest for power destroyed Cybertron?"
"Make no mistake. This time, there will be a planet left for me to rule."

"Even if we agree, Unicron's all the way down at the center of the Earth."

Bulkhead then joined in. "How are we supposed to get there...? drive?"
Ironwood then joined in. "There is only one way.

Ratchet spoke up not liking where this was going. "Absolutely not! Ground-bridging into space or onto moving trains is difficult enough.
But plotting a blind jump inside of a sentient being?! Besides, direct exposure to that much Dark Energon will debilitate you.
You haven't built up an immunity like Megatron has."

"Yet another strong argument for soliciting my guidance."

Qrow then spoke up. "You can provide Unicron's exact coordinates?"

"If you transport us to this planet's core, I can lead you directly into Unicron's spark the very heart of his darkness."

Penny had a thought in her mind. "Optimus, even if we survive the jump, how are we supposed to stop Unicron?

"One no one from Remnant will be coming with us due to the fact we don't know if he will soon pick up on Ruby or not. So you'll all need to stay behind to keep her safe. As for how we will deal with Unicron when we get down there I'll be using the Matrix of Leadership."

Miko then cut in. "What is that?"

"A vessel of pure energy, the collective wisdom of the Primes."

Jack then joined in. "Do we have time for a scavenger hunt? I mean, where's Optimus supposed to find this Matrix?"

Ruby then cuts in. "Optimus does not need to find it."

Ratchet nodded his head at Ruby. "Ruby is right both she and he carries it within them. It was the combined power of the Primes that defeated Unicron so long ago, the very reason he now seeks to destroy you."

"If Optimus unleashing the power of the Matrix directly into Unicron's spark would return him to stasis."

Jack cuts in. "Hold on. If everything goes right, Unicron's gonna stay down there? Yeah... Can't we siphon him out somehow?"

Ruby glared at him. "He's not in the earth's core, Jack. He is the earth's core. If he goes we all die!"

"Ruby is correct. Tampering with your core could affect the magnetic poles, trigger the very cataclysmic events we are attempting to remedy.
Tragically, Unicron is your planet's very seed. Always has been and always must be."

Glynda looked around and saw something. "We got another one."

"Ratchet set the ground bridge."

"Wait! We're opening up a direct path into our base with Megatron standing right there? And seriously, he's gonna risk his own spark to save us?"

"Hardly my nature."

Qrow then cut in Ruby, Glynda, And Ironwood lived through this once before and they warned us about this."

Meanwhile on the Decepticons ship.

"No word yet from lord Megatron? It appears our leader has abandoned us while this world erupts in chaos. I believe we must consider the possibility of a future without Megatron."

Now back at the Autobots base.
As Team Prime and Con make it to the base Ratchet, Ruby, and Velvet are trying to get Miko, Jack, Raf, June, And Agent Fowler to hide.

No fair! I've never seen him! Why do we have to hide?"

"Because we said so!"

Just then the Autobots, the people of Remnant, and Megatron walked in. Megatron took a look around. "So, this is where the magic happens...Quaint."

Just then Raf starts to run over to Megatron which the Humans did not know that it was coming or has forgotten about it. "Raf!"

"Rafael, no!"

"How did I forget about this?! Raf!"

"Raf get back here!"

"You!"

Just then Velvet grabbed her past self.
"Ah! You're looking much better than the last time we met, little one. Humans resilient."

He then looked at Velvet. "And who might you be."

"His past self."

She then looked at Raf. "Come on, Raf."

Jack then joined in. "Yeah, he isn't worth it."

To make sure things didn't get out of hand Optimus spoke up. "Ratchet, obtain the destination coordinates from our guest."

Ruby looked at Optimus and grabbed Jack's hand while heading to Optimus which confused the boy. "Ruby...? What going on...?"

Optimus then knelt down to the two. "Jack Will you keep something for me?"

"Sure..."

Just then Optimus gave Jack a key. "What is it?"

"It is the key to the ground bridge power supply."

"Okay, but shouldn't Ratchet have this? Perhaps even Ruby, Glynda, or Ironwood?"

"But I've been impressed by how much you have matured since we first met. As such, I feel you have earned the responsibility of safeguarding this important device until I return."

"I won't let you down."

Ruby then looked over to where the other Bots were. "Its time..."

Optimus smiled down at her. "Don't worry Ruby everything will be alright."

"I hope so..."

And with that Optimus walked over to the others. Ratchet looked at him. "Locked and ready."

Arcee looked at Megatron. "You first."

"As you wish."

And with that Megatron walked through the ground bridge. As soon as he was gone everyone from Earth and Remnant walked over and watched as each Bot went. Optimus was the last to go but he stopped and took a look at them all before going through himself.