I've been searching for a crossover story between Transformers Animated and Transformers Prime, but I couldn't find any. So I've decided to make my own crossover story based on those two shows. Hope you like it! I don't own any of the characters except my OC.

It was a nice sunny day in Detroit, Michigan. Everyone was outside enjoying the nice weather. Children were at the park playing on the playgrounds. The birds were chirping and flowers bloomed in the sunny light. On a highway below, Optimus Prime was in his vehicle mode driving towards Sumdac Tower. Issac and Bulkhead were working on rebuilding the space bridge so they could have easier access to Cybertron. The rest of Optimus's crew was also there to witness the space bridge's completion.

Optimus and his team were just a space bridge repair crew back on Cybertron before they discovered the long-lost Allspark that had been sent away by Auto bot soldiers to keep out of Decepticon reach. Their discovery led to them meeting Megatron and his army that eventually led to both parties landing on Earth. There, Optimus and his crew became the protectors of Detroit, saving the city from villains and earning the humans' trust.

"Optimus to Sumdac. I'm almost at the tower." Optimus called. "Good. Bulkhead and I can't wait to show you our project." Issac called back.

Optimus took the nearest road to the tower so he could meet up with the rest of the team. He hoped the project would work so that they could get to Cybertron and alert the Elite Guard of any Decepticon threat before the cons could reach the planet. Once he made it to Sumdac Tower, Optimus transformed and took the elevator to the top. At the top of the tower, Issac and Bulkhead were in the middle of building the space bridge to Cybertron.

Ratchet was doing some research on the project to make sure that nothing goes horribly wrong. Prowl was leaning against the wall and staring into the horizon at the distance. Bumblebee and Sari were playing cards while waiting for the space bridge to be complete. They haven't seen that much action in the past few days, so they were really looking forward to seeing this project completed.

"How long is this going to take?!" Bumblebee whined. "Be patient. It's only been a few hours." Prowl said, annoyed at Bumblebee's immaturity.

The elevator door opens and Optimus steps out to join the rest of the team. He saw that the space bridge was only partially complete. Issac and Bulkhead did a great job working on it together. They were both experts when it came to these types of matters. Issac was an excellent scientist and invented numerous robots for the city while Bulkhead was an expert at space bridges. They've decided to work on this project together and both worked well with each other.

"This space bridge is looking more impressive." Issac said. "Yup. Space bridge repair is my favorite thing in the galaxy, besides art of course." Bulkhead said.

Optimus walked over to Ratchet to see how things were going. He was busy checking the monitors for any Decepticon activity. He was worried that they would figure out what the Autobots were up to and take the space bridge for themselves. He feared that Megatron would pick up on their activity and use it to his advantage.

"How's everything, Ratchet? Is the space bridge almost ready?" Optimus asked. "Not yet. We still need a few more parts before we can get this thing up and running." Ratchet said. "I just hope we can finish this project before the cons realize what we're doing."

Just then, a portal appeared from behind them and Nikita stepped out of it. She's been helping the bots by finding supplies needed for their space bridge. She traveled to other multiverses in order to find the right parts to build a space bridge so that the Autobots could reach Cybertron and the Elite Guards. Nikita was pleased to help the bots out in any way she could. Sari and Bumblebee ran over to greet their friend after her long journey to other realms.

"Nikki! So glad you came!" Sari said, joyfully. "Yeah! Things were getting really boring over here." Bumblebee said. "I'm happy to see you too. Where's Optimus Prime?" Nikita asked. "He's over by the monitors with Ratchet." Sari said. "Thanks." Nikita said.

She walked over to where Optimus and Ratchet were and greeted them both.

"Hello, Optimus. Hello, Ratchet." She says. "Hello, Nikki. Welcome back to Detroit." Optimus said. "How was your trip?" Ratchet asked. "It went very well and I brought back some more supplies for the space bridge." Nikita said.

She opened another portal with her magic and got out a huge pile of space bridge parts. Optimus and Ratchet were still getting used to the fact that magic existed in the multiverse. They have heard of it from stories and seen it in movies, but they didn't believe that magic was real. That was, until they met Nikita and witnessed her using it for the first time.

"Here's the supplies you need for your space bridge. Got them all the way from a bunch of distant galaxies." Nikita said. "Wow! Thanks, Nikki." Bulkhead said. "Anything for you guys." Nikita said.

She gave the supplies to Issac and Bulkhead so they could finish building the space bridge to Cybertron. She couldn't wait to see the planet up close for the first time. The Autobots were also excited to see their home planet again after becoming stranded on Earth for over fifty years.

"Aren't you happy that you'll see your home again, Prowl?" Sari asked. "In a way, yes. It would be nice to see home again." Prowl said. "I can't wait to meet the Elite Guard! Maybe they'll let us join their ranks after helping defeat the Decepticons here on Earth." Bumblebee said with joy. "I doubt that they'll let you join." Prowl tells him.

Issac and Bulkhead began placing the parts into their space bridge and Issac had his robots help them. Optimus and Nikita watched them work while Ratchet focused on the monitors. He had a worried look in his eyes, he wasn't sure if this project was really going to work. Optimus looked at Ratchet and could tell that something was bothering him.

"Is everything okay, Ratchet?' He asked. "Oh! Um... yeah. Everything's just fine." Ratchet said. "Are you worried that Megatron might discover our space bridge and take it for himself?" Nikita asked. "Partially, yes." Ratchet said. "Well if he does, we'll be ready for him." Optimus said.

Nikita looked at the monitors and saw some unusual activity on the screen. She found that quite suspicious even for herself.

"What's that on the screen, Ratchet?" She asked. "Oh, just some kind of technical error or something. Doesn't seem too severe." Ratchet said. "I'm not so sure about that. We've had these types of problems before." Optimus said. "Well, better keep an eye on it just in case." Ratchet said.

As the Autobots and their human allies continued working on their project, Nikita decided to travel to another world to check on her other friends. She would come back later to see how things were doing here. She hasn't told her friends yet that they're were also other versions of them in other universes.

"They can't know about them, not just yet. Don't want them freaking out or anything." Nikita said to herself. "Also don't want the Decepticons getting any ideas either."

So she opened up a portal and hopped inside to another dimension to meet up with her other friends.