Answer to this challenge from the Tok'ra Resistance plot bunny list:
Sam, Apophis, Martouf/Lantash
Apophis is getting way too much power so the Tok'ra want to get someone in there to infultrate it. The problem is that Apophis somehow got one of the Tok'ra (or maybe it was just Tanith) but now Apophis knows everyone of the Tok'ra (and there are no new hosts you remember) so no Tok'ra can get on his ship.
The Tok'ra REALLY need someone on the inside. There plan (since Apophis needs a new queen) is to somehow trade a goa'uld sybiote (the new queen) for a Tok'ra sybiote. The only thing they need is someone that Apophis would want to be the host to his new queen.
Someone who has a lot of knowledge (when the harsesis comes) and so he would choose her. I'm sure you all know where this is going...
Anyway, when Sam is there, she finds Martouf/Lantash's body and since she has a Sarcophagus handy...so on. BTW-Col. O'Neill is somewhere else and Sam's dad doesn't know of the plan until too late (it was Anise's plan surprise, surprise).
Bold is symbiote speaking with symbiote voice.
Story takes place/starts maybe some months after Divide and Conquer.
"Unscheduled off world activation!" Harriman announces on the speaker system. "It's the Tok'ra!"
SG-1 - minus Jack who was on vacation, as SG-1 was really on stand-down - hurries to the gateroom and arrives just as a small group of Tok'ra came through. The guards were already standing ready if it was a trick.
"Stand down, men!" Hammond orders.
"Anise!" Daniel observes.
"Yes, I remember you as well, Doctor Jackson." Anise says, smiling and bowing her head to him. She looks at the others and greet them too.
"Why are you here?" Hammond asks.
"I have unfortunate news about Apophis, and we need your help."
"Surprise, surprise!" Daniel mumbles unhappily under his breath.
"Follow me." Hammond orders, and SG-1, Anise, and the two Tok'ra guards follow him to the briefing room.
"So Apophis used Tanith against you, while you thought you fed him false information through him?" Teal'c asks.
"Yes, that is unfortunately so." Anise hangs her head. "Apophis is a problem for all of us. He has way too much power, and we know it is only a matter of time before he attacks both the Tok'ra and the Tau'ri. It is in all of our interests that we do something against this threat."
"What can we do?" Sam asks.
"Why don't you just send someone there, then?" Hammond says.
"We do need more information, but unfortunately, now Apophis knows the looks of all the Tok'ra, so we have no one to send." Anise says. "We need someone on the inside. Someone who can spy on him, and send us information we can hopefully use against him."
"You don't seriously want one of us to go there?" Daniel asks.
"Yes, we do have to ask you this. We are desperate!"
Hammond shook his head. "Why would we even be able to do this?"
"Yeah, don't you need someone who is a host? I mean, you usually use Tok'ra as operatives?" Daniel points out.
"Very true. It would have to be a host, as a human would not be allowed a position where they would get any of the information we needs from Apophis." Anise admits.
"So you're asking one of us to become a host and then send them to a dangerous position, spying on Apophis? That's crazy!" Daniel exclaims.
"I will have to agree with Doctor Jackson." Hammond says. "I cannot ask anyone to do that."
"Please, General. It is of the utmost importance for all of us! If Apophis continues to gain strength, he can be the new supreme system lord, and he hates the Tau'ri and the Tok'ra! It would be the end of all of us!" Anise pleaded. "At least hear my plan!"
Hammond sighed. "Very well. Let's hear it."
"Thank you. As I said, we need someone on the inside. Someone that can get on board his ship, and into his palace, someone he will trust implicitly. You know that his queen was recently killed..." Anise says.
"Yeah..." Daniel looks down. "Together with Sha're..."
"I am sorry for your loss, Doctor Jackson." Anise continues. She hesitates for a moment. "Apophis is in need of a new queen, and has in fact found one. He is currently searching for the right host. What we need is a female that Apophis would want as host to his new queen."
"What!" Sam exclaims.
"You want to make one of my people a host to a Goa'uld?" Hammond looks at her in shock.
"Are you crazy?" Daniel says.
"Wait, if that was what you wanted, that person would not only not be able to report back, but the entire plan would be found out from their mind. No, that can't be your idea, can it?" Sam asks.
"No, and it is not. We intend to somehow switch Apophis's queen for a Tok'ra symbiote."
Anise closes her eyes for a moment and gives Freya control. "Do not worry, Samantha Carter, the volunteer would be host to a Tok'ra, not a Goa'uld."
"Well, that's... something..." Sam looks shaken. "It's still dangerous! What if you don't succeed in making the switch? How do you even intend to do that?"
Freya gave Anise control back. "It is dangerous, but we have a plan, which I am certain will work. We have found out who the Jaffa carrying the symbiote is, and we will capture her, switch her symbiote for a Tok'ra, and use a hara'kesh to make her forget it. An adult symbiote can only live a few days at most in a Jaffa, but if we do this just before she goes to Apophis, then this will not be a problem."
"I have a question!" Daniel says.
"Yes?" Anise looks at him.
"Won't Apophis realize it's not a queen he has, but a regular symbiote?"
Anise nods. "Yes, eventually, but not at first. You see, he immediately wants to create another Harcesis, so the queen would give birth to a human child before she would be expected to spawn any symbiotes. That gives us at least 9 months where our spy can gather information."
"Say what again?" Sam exclaims. "Whomever volunteers is gonna get knocked up by Apophis? You didn't think this little gem of an information was something that needed mentioned?"
"I agree!" Hammond looks angry. "This is not something I can authorize!"
"Not even if the fate of the galaxy hangs on this?" Anise says. "It is a sacrifice, of course, but one each of the Tok'ra would willingly make, if any of us could but go. Unfortunately, as I mentioned, Apophis knows how we looks, all of us. However, the Tok'ra symbiote that has volunteered for this will of course be willing to make the host forget all about the actual mating - or keep her unconscious while it happens."
Sam snorts. "I guess that makes it slightly better! I still can't imagine anyone volunteering!"
Anise sighed. "Major Carter...I am sorry you are so set against this, as we had hoped you would volunteer."
"Me?!" Sam looks at her in shock. "Why?!"
"Because of the knowledge you carry from Jolinar, and the position you hold here, Apophis would find you highly attractive as a host for his queen. It would mean the harcesis inherits Tok'ra genetic memory as well, and he would then have what no other Goa'uld has. Of course, this makes this an even more dangerous undertaking, but I feel we have no choice."
Sam stares at her speechless for a few moments. "I'm sure happy you find there is some reason he would want me!"
"I apologize for the way I was expressing myself. You are a beautiful woman, Major Carter, and he would certainly want you for that. However, there are many beautiful women in the galaxy, and that would perhaps not be enough for him to pick someone special." Anise tells her.
"It's not something we can force you to do, Major Carter, but I will have to agree with Anise that it sounds like you would be the best choice for this." Hammonds says.
"Very true." Teal'c nods. "Apophis would be certain to choose Major Carter if he had the opportunity."
"You can't seriously be suggesting Sam does this?" Daniel exclaims.
"Wait! One more thing! How can the harcesis get Tok'ra genetic memory? I'm not a host! I mean, I will be, but Apophis won't know it's to a Tok'ra!" Sam asks.
"Being a host causes changes to the genetic material - to seed in men, and to the eggs in women. In men it happens as the seed is produced, but in women it happens immediately, to all eggs. All your offspring will carry Jolinar's genetic memory, Major Carter."
"What? So my kids would be harcesis no matter what?"
"Only if the father is also a host, as you need two activation genes for the genetic memory to be active and accessible."
"I...see." Sam frowns, thinking about it might have been something that had become relevant - if Martouf and Lantash had not been killed as zatarcs some months before.
"So you're willing to risk Apophis getting his hands on Tok'ra genetic memory? Everything you guys get from Egeria?" Daniel asks.
"We have no choice, but she was not born a Tok'ra, so it will not be Egeria's genetic memory that is risked. Jolinar, did, however, know as much as any Tok'ra, of course. She even started the Tok'ra, with Egeria." Anise explains.
Sam shakes her head. "I don't like this - at all. But I can see it is necessary, and that I am probably the best choice for this. So, okay - I guess I am 'volunteering'." She makes a face.