Follow Mi's suggestion and let her go in alone

“Mi’s going to go inside there and get Sarah’s Grandson,” Tally decided, “The rest of us can just wait here.” Mi looked over her shoulder and beamed at Tally for going with her idea.

“Alone?” Sarah worried, “why should she have to go alone? Surely she would stand more of a chance with more of us? You, young man, should be ashamed of yourself. You’re a knight! And now you’re going to just sit back and let someone else storm the castle?”

“Calm down, Sarah,” Mi said, and slid off of her horse’s back to go talk to Sarah up close. “I won’t need help, there’s absolutely no danger for me,” she explained. “Technically, I’m in charge of that place. I’ll be able to get a prisoner released to me, no problem. No one would have any reason to suspect I’d be freeing him, and even if they did, I’m well within my right to as general. If I took you or Tally with me, that would just make things harder, because I’d have to make sure you don’t get whisked away and locked up.”

Sarah mulled this over in her head for a bit, then conceded. “Point taken. Thank you so much, miss, for helping an old woman like me. I only wish your goons who kidnapped my grandson had been so understanding.”

“You can thank Tally for that,” Mi said, sticking her thumb back over her shoulder to point to Tally on the horse, who waved humbly, “It’s because of him that we’re helping you. Some kind of mind control,” She made a cuckoo motion at the side of her head.

“Erm, yes, he did mention something about that,” Sarah nodded, a little weirded out by Mi’s casual admission of being brainwashed.

“Right, I’ll be needing the horse,” Mi said, and traded places with Tally. “Good luck,” Tally said bracingly. “Don’t worry, I’ll be fine,” Mi said. “Now, Sarah, I’ll need as good a description of your grandson as you can give me.”

“Oh, well his name is Dave,” Sarah began, “he’s 23 years old, 24 this summer… oh my, I need to get to work on his sweater! I knit him a sweater for his every birthday, you see, and…”

“Very nice, very nice, but I need description,” Mi urged.

“Oh, yes, sorry. Well, he has black hair, and he’s about 5’10 tall, 191 pounds, blood type A positive…”

“Getting a little too specific, now, slow down,” Mi said. “I need stuff that would help me pick out his face in a crowd.”

“Ah, yes, well he has this lovely-shaped face, with a very handsome smile…”

Ten minutes later, Mi was riding away towards the camp with a fuzzy and frankly inadequate picture of what Dave would look like, but she’d given up trying to get any more usable information out of Sarah. Quelm was staying put to look after Sarah and Tally until Mi returned. She helped Sarah get down off of the horse, and let it wander around looking for something to eat. She guided Tally and Sarah to sit under a large tree, which would make them harder to spot from a distance in case anyone in the prison was scanning the area for escaped humans.

“Tally, once we’ve rescued Dave, what are we going to be doing next?” Quelm asked, absently blowing on a dandelion, the seeds of which drifted directly into Sarah’s unsuspecting face.

“I’m on a quest to stop the invasion and vanquish all of the monsters back to their own world,” Tally said, over the sound of Sarah spitting dandelion seeds out of her mouth. “I was hoping to recruit a small army of you lot to help me. So far, I only have you and Mi Iau.”

“I see,” Quelm said. “Well, I’m with you all the way. What will happen to us after that? I mean, those of us who are loyal to you? Will you send us back as well?”

“You could stay behind and help in the rebuilding of human society,” Sarah suggested.

“That’s not a bad thought,” Tally agreed.

“Or you could live like a king, being pampered by your harem ‘till the day you die,” Brim offered, sleazily drifting through Tally’s field of vision. “That thought had already occurred to me, Brim,” Tally grumbled under his breath.

“What was that?” Quelm and Sarah looked at him expectantly. Tally realized at this point that neither of them knew about Brim. “Ah,” Tally said. “I suppose it’s time you two knew about the fourth person sitting under this tree with us right now.”

Meanwhile, Mi had arrived at the prison and effortlessly passed through all the security. She found herself breaking a nervous sweat, even though she knew no one would have any reason to suspect her of anything. The mere fact of knowing she had turned against her own warriors was giving Mi an irrational paranoia that someone might smell her treachery. Nevertheless, she coolly and casually walked through one security check after another, receiving many greetings and salutes from the guards.

“I’ve come to collect a specific prisoner,” Mi told them, and was met with knowing smirks and chuckles. “Not to fuck him,” she had to clarify, “I want to have him released to me.” Mi repeated all of the identifying information she could remember from Sarah’s ramblings, and ordered that the prisoner most matching that description be brought to her. After about half an hour of guards going down the rows of cells, checking the faces and names of the prisoners inside, they returned with results. In fact, rather more results than Mi was hoping for.

Mi was presented with two young men, both named Dave, and both roughly matching the descriptions Sarah had given. Shit, thought Mi Iau.