Due to some malicious curse, one of the two becomes trapped in the darker reaches of their own psyche. The other has to enter their mind to find and rescue them, facing down their bad memories and inner demons in the process. Psychic hurt/comfort ensues.

I'd prefer this with Newt/Creedence or Newt & Creedence, with Creedence as the rescuer, but if a potential filler has an idea involving different characters, go for it! (It occurs to me that Queenie's talents would be perfect for this.) The only thing I ask is not too much focus on Graves. Nothing against him, but there are lots of good Graves prompts already and I'd like to see someone else in the spotlight.