Kylo Ren has been captured by the Resistance and will be facing a trial for war crimes. Ever since he was brought to the base, Poe has been having very intense, very dark nightmares (there could be a sexual or non/dubcon and/or torture component to the nightmares but I'm not picky, I just want dark and disturbing). He even stops sleeping because he doesn't want to face what creeps into his head at night.

Finn becomes convinced Kylo is doing something to Poe from within his prison cell and asks Rey for help. Rey proposes she go into Poe's mind and see if Kylo has been manipulating his nightmares. Poe isn't a fan at first, but eventually agrees. What Rey finds in Poe's mind is not anything the trio had expected. Up to the author what that is.

Would prefer a happy (or ambiguously happy) ending, and no Kylo redemption.