Being humanity’s last hope for survival may sound like a sweet gig, but here’s what they never tell you: it comes with strings attached.

That’s a lesson Luna quickly learns on Wednesday’s episode of The 100 (The CW, 9/8c), as the Arkadians “escort” her to Becca’s abandoned laboratory in order to synthesize her radiation-resistant blood.

“These are good people,” Nyko assures Luna in TVLine’s exclusive sneak peek. “I trust them, and you trust me.”

“They think my blood will save them,” she replies. “What do you think would happen if I said they couldn’t have it?”

Look, I know we’re supposed to trust the main characters — they’re heroes! — but Luna does have a point. (And the way Miller orders her around towards the end of the clip only reinforces Luna’s concerns… and mine.)

Hit PLAY on the video above, then drop a comment with your thoughts below.