It may happen that someone asks a question about some work of science fiction. It may be about a character, plot, or even a story-ID question.
What do we do then? Migrate to Science Fiction and Fantasy Stack?
No. As we do on Movies, we don't dictate which site has "precedence" or "priority" over the other. If someone asks a question here that's On-Topic here, it should stay here, even if it's also On-topic on Sci-Fi.
See the discussion on Movie's Meta, I think it should serve as a good guide for us here as well: What are our thoughts on the practice of using comments to direct users to other SE sites?
On-topic questions should not be migrated (possible caveat: unless explicitly requested by question's OP?). Rationale for that is laid out in SE reference on migrations.
Offtopic questions of high quality that are on-topic on SciFi.SE should be migrated under the usual migration guidelines and processes.
Offtopic questions of low quality should be left alone, per the same reference (the succint if crude formula is, "don't migrate crap"
Reference: What is migration and how does it work? on main Meta.
If the question is on topic here, leave it here.
If for some reason we may think the querant will get a better answer there, we may direct them to SFF in a comment, but since the question is still on topic here, there's no reason to migrate.
Besides, as a new beta, we need all the quality questions we can get.