NOTE: This Transformers Animated / Transformers Prime crossover begins several years after the end of Season 3 of "Transformers Animated". Sari is now a Cyber-Ninja Gakusei (student), and Jazz is her Sensei (teacher). For further background reading, please refer to my other FanFiction stories:

1. Sari Beyond Endgame - takes place immediately following Season 3
2. Sari Sumdac, Technorganic Recruit - Sari is now a Cybertronian citizen, and a member of Optimus Prime's team
3. Sari Sumdac, Cyber-Ninja - takes her to the beginnings of adulthood, where she acquires her final, full set of mods, and develops into one of Cybertron's most powerful Cyber-Ninjas
4. Sari Sumdac, Cyber-Nijna II - Sari enlists in Autobot Boot Camp, and later on attends the Autobot Academy (work in progress)

Hope you enjoy this crossover! And many thanks to LuisJM, who came up with this crossover idea. He's written many terrific stories in FanFiction, and I've had the honor of collaborating with him on a couple of TFP ones; his stories have helped me develop my understanding of the TFP characters.

Please leave reviews! I look forward to your ideas and suggestions about this story.

Disclaimer: I don't own "Transformers Animated" or "Transformers Prime".

Sari, Optimus and Jazz are defending a new space bridge which has been built on Mars. Farside Beacon One, the long-distance monitoring station on the moon, had sent out an alert that a Decepticon ship had passed Jupiter and was on its way toward the red planet.

Aboard the Autobot ship Ark-32 are Optimus Prime, Jazz, Arcee and Sari.

Chapter 1: Sari Disappears!

Optimus landed the Ark-32 on the Martian landscape close by the newly-installed space bridge. "Decepticon ship ETA one megacycle," said Arcee.

"Sari, you and I will head over to the space bridge. Jazz, control the offensive weaponry. Arcee, continue monitoring the Decepticon ship. Send us regular updates," said Optimus.

Optimus donned his flight wings, and he and Sari left the ship and went over to defend the Autobots' Martian territory.

"Why are they attacking this space bridge?" asked Sari.

"It's the next step in our colonization of this planet," explained Optimus. "They want to do everything they can to halt our progress."

"Optimus! Decepticon ship inbound!" said Arcee.

"Alright Autobots, get ready!" And Optimus and his crew prepared for the attack.

The enemy ship came within sight. Jazz fired the laser emitters. Sari powered up the plasma thrusters on her pedes, and she and Optimus took flight to begin fighting the ship from the air.

"Optimus! Sari! Beware!" Said Arcee. "I'm detecting a new type of weapon on the Decepticon ship. Halonian in design – it must have been acquired from Swindle. If it hits you it can send you into the shadow zone!"

"Acknowledged, Arcee," said Optimus. "Sari, take extreme precaution. Evasive maneuvers."

"Yes, sir."

Suddenly, one of the Decepticon's particle emitters hit Optimus' right wing, and spiraling down, he crashed onto the Martian surface.

"Optimus!" yelled Sari.

"I'm alright, Sari!" said Optimus. "Defend the space bridge!" And Sari dove down towards the bridge.

She stood her ground before the bridge, her palms glowing, firing her servos at the Decepticon ship.

"Sari! They're powering up the Halonian weapon!" yelled Arcee. And a bright yellow beam came straight at Sari. She managed to dodge the beam just in time, but it struck the space bridge controls. This caused the bridge to start up, but instead of forming a blue orb, a blue-yellow orb started developing between the twin tines. Sari paid no heed, and continued firing her blue-white orbs at the Decepticon ship. Optimus threw off his flight wings and ran towards Sari to assist.

The Decepticons then shot a particle beam at the ground in front of her, which exploded the surface, throwing her up and back, and knocking her out. "Sari!" yelled Optimus. The force of the blast cast her into the blue-yellow orb, which, as soon as she flew into it, suddenly collapsed around her, and she disappeared.

"Jazz! Arcee! Sari's disappeared into the space bridge!" yelled Optimus.

Ratchet was working on the ground bridge, installing some upgrades. He was performing a few experiments, which should give Team Prime enhanced transportation abilities.

Raf, curious, stopped on by. "Hey Ratchet, what are you doing?"

"Oh, hello, Rafael. I've got some ideas for improving the ground bridge. I think I can enhance its capabilities, perhaps even make it possible for us to turn this into a space bridge."

"Really? That would be awesome! Can I help?"

"Well, I'm not sure. These changes will increase the power, but I must make sure I include dampeners, or it could lead to uncontrolled consequences. What types of things can you do on your laptop there?"

Raf opened up his laptop. "Let me hook it up." And he connected his port into Ratchet's systems.

The two worked together. "I see what you're doing here, Ratchet," said Raf. "But be careful of this algorithm; even a slight change can…"

"Yip, yip yip…" I know what I'm doing, young man."

Raf sighed. "OK."

Finally, Ratchet stepped away from the console. "I think that's it! Let's give it a try."

"Are you sure? Maybe we should look through the code again."

"I'm pretty confident. Yes, yes, this will work," said the old bot, and fired up the bridge. He folded his arms to watch the results in the tunnel, as it hummed to life. Raf's face grimaced, and registered a bit of concern.

The tunnel came to life, with strange shimmering rings of bright green, blue and yellow. Sparks began emitting from the controls. Ratchet turned back to the console. "What in the name of Primus is going on?!"

Raf turned to his laptop. "The ground bridge is sending a signal out into space! It's pulling something down!"

Ratchet dove under the console to try to power the bridge down. Suddenly, the tunnel started belching blue smoke, followed by a bright flash and an explosion. Ratchet and Raf covered their faces. He was finally able to power the bridge down, and as the smoke cleared, the two noticed a small figure lying on the floor below, surrounded by some red rocks.

"Uh, Ratchet? Who, or what, is that?" asked Raf.

"Stand back, Raphael!" said Ratchet, and walked towards the little body on the floor. It looked like a human-sized robot figure, with yellow and cream-colored armor, and triangular-shaped appendages on its helmet. It was unconscious.

By this time, the rest of Autobot base members came running in. "What was that explosion?" said Optimus.

"I was working on some experiments to the ground bridge," said Ratchet. "Things got a little out of control, but everything's OK now."

"Everything's OK, huh? Then, who's that on the floor?" asked Miko. All eyes and optics turned to look at the floor near the tunnel.

June walked over to the unknown human-sized figure. "It looks like someone in a robot suit." She reached down and felt around the neck. "I'm trying to see if there's a pulse, but this suit is in the way." She looked around for a zipper or some other latch to see whether it could be removed. Looking up to the group, she said "I can't find a way to take this robot suit off – assuming this is a suit." June then tried lifting the body up. "Ooof! This thing weighs a ton!" She managed to turn it over on its back. "Ratchet, I don't think it's human."

By now, everyone was standing around this strange, prone figure.

"Hey! Is that an Autobot insignia on its chest?" said Smokescreen.

"An Autobot?" said Bulkhead, scratching his helm.

"Do they make them that small?" asked Jack.

"Not to my knowledge, Jack," said Ratchet. He picked the body up. "But, let me take...uh, her," looking at the skirt, "to the infirmary," and he carried the unconscious bot down the hall.

"Where do you suppose she came from?" asked Arcee.

"Let me see if I can pull any logs from my laptop," said Raf.

"Please begin immediately, Rafael," said Optimus. "And as soon as Ratchet completes his examination of this strange bot, I want the two of you to run a full diagnostic on the ground bridge. We need to find out how she, and these red rocks, wound up in our base. We must make sure this is not the work of the Decepticons, or MECH."

"Arcee, when she comes to, I want you to talk to her. Find out where she is from."

"Yes, sir," said Arcee.

"Hey everybody! She's coming to!" said Miko, yelling out the doorway. Miko then ran back to the sick bay bed and sat beside the patient.

"Unnh," Sari began to awake. She opened her optics, and the first thing she saw was Miko looking at her. "Hiya!" the girl waved.

"Where am I?" Sari asked, rubbing her helm.

"You're in Autobot Outpost Omega One," said the Japanese teen. "I'm Miko."

"Hi, uh, Miko," said Sari. "What did you say…Autobot Outpost Omega One?"

"Yep! What's your name?"

"Sari," she said weakly.

"Sari? Like the dress? That's a cool name!"

Ratchet and Arcee came in to the infirmary. "OK, thank you, Miko," said Ratchet. "Well, glad to see you awake, little bot. You caused quite a stir around here when you appeared on our floor."

"Her name is Sari, like the dress" said Miko.

"Well, Sari, you are low on energon. Here, please take a drink." And helping her up, Ratchet offered her some.

"Thank you," and she took the energon. "Miko said this place is Autobot Outpost Omega One. What planet is this?"

"This is Earth," replied Ratchet.

"Earth? I don't know of such a location on Earth," said Sari.

"You're familiar with Earth?" asked Arcee.

"Yes, I'm from Detroit."

"Detroit? I was not aware we had any Autobots in Detroit. How many of you are there?" questioned Arcee.

"Well, at Autobot Central, there's Optimus, Ratchet…"

"What?!" said Arcee and Ratchet in unison.

"Did you say, 'Optimus'? And 'Ratchet'?" replied Arcee.

"Yes. Optimus Prime. He's my commanding officer."

Arcee and Ratchet looked at each other. Miko whistled. "Man, this bot's either nuts, or from another dimension!" And she started humming the "Twilight Zone" theme.

"I'm sorry, but what is it that I said that's so strange?" asked Sari.

"Well, for starters, I'm Ratchet, and I've never met you," he replied.

"You're Ratchet?!" Said Sari, looking confused. "But, you don't look like him at all."

"And Optimus is our Prime, and he saw you before Ratchet carried you here to the infirmary. He did not recognize you." Said Arcee.

"Wait. You have an Optimus Prime?"

"That's right. He's here at our base. And this is our Ratchet. But your Optimus, and your Ratchet, are in Detroit?" questioned Arcee.

"Yes, along with Arcee and Bulkhead."

The two-wheeler was taken aback. She leaned forward and pointed toward herself. "Uh, Sari, I'm Arcee."

Shocked, Sari put her face in her servos. "This is insane!" she said. "I feel like I've landed in an alternate dimension!"

"Told ya!" said Miko, and hummed the "Twilight Zone" theme again.

Sari put her servos down and looked at the three. "Let me guess: you have a Bulkhead as well?"

"Yes," said Ratchet, curiously.

"Hey, do you have a Miko?" asked the Japanese girl.

"Uh, no, sorry, no Miko," replied Sari.

"Darn!"

Ratchet racked his processor, trying to piece this mystery together. "Alright. Let's start from the beginning, Sari. Before you landed on the floor of our base, where were you?"

Sari sighed, and sat back. "Optimus, Jazz, Arcee and I were defending a new space bridge on Mars," she explained. "We were fighting the Decepticons, who were trying to destroy it. Suddenly, a yellow ray hit the bridge controls, which somehow activated it. Right after that, a particle beam struck the ground near where I was standing, knocking me out and throwing me into the vortex."

"The next thing I remember, I was waking up here, with Miko looking at me."

Ratchet rubbed his chin. "Mars? Well, that would explain the red rocks. Let me go get Raphael," and he left to get the young computer wiz.

Sari looked up at Arcee. "So, you're Arcee?"

"That's right. I am a Ninja scout."

"Pleased to meet you, Arcee. I am a Cyber-Ninja Gakusei. My Sensei is Jazz. I am very close to finishing my training and becoming a full Cyber-Ninja."

"Well that's excellent! I do have a question, Sari: Do they have many Autobots in your world that are your size?"

"Not normally, no. I am a Technorganic."

"Technorganic?" Arcee looked confused. "I've never heard of them. Are Technorganics human-sized?"

"Yes. Technorganics are half Autobot, half organic. My organic side is human. Here, let me show you." And with a flash of blue, Sari transformed into "human" mode.

"Whoa!" shouted Miko. "You're human now? Neat!" She then leaned closer to look at her face. "Wow! You've got the coolest blue eyes I've ever seen!"

"Actually, they used to be brown, until my upgrade, and...well, that's a long story," said Sari.

Just then, Ratchet walked in with Raf. "Hey! Where did Sari go? And who is this?"

"Ratchet, this is Sari," said Arcee. "She's a Technorganic."

"That's impossible!" replied Ratchet. "There's no such thing as Technorganics! They're mythological creatures!"

"Boy, you're about as grumpy as MY Ratchet," said Sari, which made Miko snicker.

"Here, Ratchet, check my chest," said Sari. "I think you'll find I still have my Spark chamber."

Ratchet took out his portable sensor and placed it over her chest and looked at the readout. "By the AllSpark!" he declared.

"And if you scan my head, you'll find I have a processor instead of a brain. But if THAT doesn't convince you…" and with a blue flash, she transformed back into "bot" mode. "Maybe THIS will."

Ratchet was dumbfounded, and stepped back. "A Technorganic…? But, how?"

"In my world, we have Technorganics," said Sari.

"What do you mean, 'in your world'?" asked Ratchet.

"I'm pretty sure now, Ratchet, that I came here from an alternate dimension somehow. I mean, I have an Optimus Prime; you have an Optimus Prime. You have an Arcee; I have an Arcee. You have an Autobot base called Autobot Outpost Omega One; in my dimension, we have an Autobot base called Autobot Central."

"But, how did you manage to come into our dimension?" asked Ratchet.

"I think I might be able to explain," said Raf. "I've been looking at the logs. When the ground bridge turned on, it shot up into the sky. Then, it went and grabbed an anomaly of some kind. That anomaly was likely the space bridge transport of Sari here. As a result, it grabbed that transport and brought her into our base."

"But, will it be able to send her back?" asked Ratchet.

"I don't know. I'll need to examine the logs very carefully and go back into the ground bridge systems," he replied.

"So, what you're saying, Raphael, is there's a chance I might be stuck in this dimension permanently?" asked Sari, concerned.

"Maybe yes, maybe no, Sari. Let me see what Ratchet and I can figure out."

She sighed. "Well, at least, I got yanked into an Autobot base, and not a Decepticon base."

"Or a MECH base," said Ratchet.

"Who?" asked Sari.

So, that's the first chapter of this crossover. What do you think? Sari's going to meet Team Prime, and their Optimus. Back in her dimension, they're going to have to figure out what happened to her. Will their space bridge's logs provide any clues? Back in the "Transformers Prime" universe, will Raf and Ratchet be able to find a way to send her back?

Until then, Sari has many mods, skills and talents to contribute to Team Prime - she can be a valuable member! But also a very valuable catch should she fall into the clutches of the Decepticons, or MECH!

Lots of possibilities for this story! I wanted it to be at least in TFP Season 2, but should it instead take place in Season 3, with Ultra Magnus and the Predacon? Please review.