Optimus and Ratchet struggle with the fact it's a struggle to find (Y/N). There's a battle when they finally get her location, and a certain mech crashes the scene and saves (Y/N). Optimus and Ratchet want to get (Y/N) pregnant with twins. They wait until (Y/N) is ready to try to get pregnant.

Lennox's P.O.V.
It's been three weeks since the Decepticons' attack since they took (Y/N). We've tried to locate them, but every time we get a lead, the cons remove it. Optimus and Ratchet struggle, knowing they couldn't protect her. I dread I have to tell them everything, including the note we got;

I'm going to tear her apart and put her back together again and again. I hope you saved a photo of her because she'll either be dead or unrecognizable.

That's when they spiraled downhill, which is not helping anyone or the search for (Y/N).

Bumblebee's P.O.V.
Lennox asked me to return to the base to help find (Y/N) as I suggested I should have done three weeks ago. The problem is the cons could target Sam. I'm glad he's understanding of how serious this is. As he gets settled in my room, I go to the medbay to check on Ratchet, then to find Optimus.

I didn't think I'd see Ratchet crying. No attempt to hide it either; lights on so anybot could walk in as I just did.
At least you could have made it seem like the medbay is closed.
This isn't like Ratchet at all. He wouldn't show emotion like this.

A few minutes pass before Ratchet realizes I'm in here.
"Forget what you saw!" He demands as he wipes his optics.
"We will find her, Ratchet."
He turns around, his back facing me.
"How long...she could be dead and... we'll be bringing back a dead body and planning a funeral..."
I hug him from behind, feeling him jump a little, "she wouldn't want you to be down like this. We'll find her."
Ratchet sighs and nods as I pull away and leave the medbay.

Two weeks later

Third-person P.O.V.
The Autobots and a group of soldiers go on another search mission, hoping to find something. Hours fly by, and Lennox is about to tell everyone they should return to the base when he gets a Decepticon signal.
"I have a signal; let's go!"
Optimus tells the humans to return to the base. Lennox doesn't bother arguing and tells the soldiers to return to N.E.S.T.

As the Autobots barge into the Decepticons' hideout, they realize they're outnumbered.
"WHERE IS (Y/N)?!" Optimus yells.
"Like I'd return her to you," Megatron taunts.

(Y/N)'s P.O.V.

"Ah, they're here," Starscream smiles, "here, human, enjoy watching us kill your friends."
He puts a datapad in the cage and leaves.
I hate I'm watching them lose.

Ten minutes pass before a bot smashes through the wall.
"AUTO—!"
The Autobot kills the guard without a problem. He slices a side of the cage and reaches in. Even though I know he's an Autobot; my reaction is to get away.
"No need to be afraid; I'm here to help you," the silver mech says.
I nervously crawl onto his servo.
He runs out of the room and towards the action. We get to the battle...oh fuck, In time to watch Ironhide and Ratchet get killed. The silver Autobots quickly kills the con.
"Damn, I'm good," he says once the con is dead.
"You don't need a badass entrance, Sideswipe; that's my job," Ironhide laughs.
I climb onto Sideswipe's shoulder, allowing him to use both his blades in the fight.

The fight doesn't last long before Megatron orders the cons to retreat.
"Nice to see you, Sideswipe," Optimus says
"Did you guys lose something?" Sideswipe asks as I get on his servo.
"(Y/N)!" Optimus and Ratchet exclaim.
Optimus takes me from Sideswipe's servo, and both he and Ratchet kiss me
"I have a lot to catch up on," Sideswipe jokes.

After I'm given a clean bill of health — to Optimus and Ratchet's relief — I'm allowed to rest in my room.

Optimus and Ratchet's holoforms walk in an hour later and lay on the bed close to me.
"I am sorry we couldn't get to you sooner," Optimus sadly apologizes.
"It's not your fault. Megatron planned this, and as you can see, he was playing with you guys; I am fine."
I kiss them both before Ratchet kisses me passionately as Optimus kisses my neck. . Ratchet moves, and I feel his spike is hard. No doubt Optimus is also looking for some fun. I hate to disappoint them, but I'm not in the mood. Instead, we cuddled until we fell asleep.

Third-person P.O.V.
As awkward as the conversation is, Optimus and Ratchet talk about how they both love (Y/N) and want to get her sparked. It's been a topic for three weeks now. This leads to a debate about who should father a baby first.
"The chances of getting (Y/N) pregnant with twins and one is mine, and the other is yours is nearly impossible," Ratchet argues, "but after what happened, (Y/N) might not be looking to get pregnant for a while."

Even if (Y/N) isn't ready for months, Optimus and Ratchet agree they need to print this up with the others, especially Lennox. It's strange to talk about having a baby or hopefully babies around the base in a hypothetical way. However, a few of the Autobots asked why Optimus and Ratchet are talking hypothetically since it's no secret they'd love to get (Y/N) pregnant.

Lennox reminds the two of a party happening tonight, aware of what might happen, but it's none of his business. Unknown to him, Optimus and Ratchet talk about the perfect opportunity to frag (Y/N) at the party.
All they tell (Y/N) is there's a party tonight, and they want to take her.

The dress (Y/N) picks doesn't help the two mechs resist doing it right now.
They try to wait, watching for her to go into the bathroom.

(Y/N)'s P.O.V.
The party was nice, but something is off with Optimus and Ratchet. Add how Ratchet comes into the bathroom before I close the door. This is not the ladies' room but a single-person bathroom. I don't know why a military base has both men's and woman's restrooms and a few of these bathrooms. He immediately squeezes my breasts.c
"What the fuck is wrong with you?!" I ask before I see his spike in his pants, ready as I look at our reflection. To make matters worse, Optimus comes in, also with his spike ready.
They wouldn't rape me.
"We want to have a sparkling with you," they both say.
"Oh, I do too, but..."
"We want to try to get you pregnant with twins, and maybe one will be from either of us," Optimus explains.
Did they talk about who goes first?
Ratchet undresses me as Optimus undresses, then Ratchet undresses. I was right; they're both ready. It's an interesting experience fragging both the mechs I love.

A week passes before Ratchet tells me he smells hormonal changes and wants to do a blood test for pregnancy. He calls Optimus in before reviewing the results.
"She's pregnant," Ratchet smiles.
Optimus hugs me as Ratchet kisses me.
We joke that I'm having twins...

It's my first pregnancy, so Ratchet doesn't question why I look bigger. Also, knowing each woman is different. It's not until the first ultrasound at six weeks do we discover I'm having twins. We decide to wait until the twins are born to figure out who's their father or if the babies have different fathers.