Real bizarre one.
It started out as a normal vacation to Seattle and we were boarding a ship for some kind of ocean tour. I think someone recognized the name on my jacket and asked who I was and I explained that it was my parent's jacket. I think that after that, somehow the dream morphed into complete sci-fi.
So the start of the sci-fi arm of the dream was like a movie trailer. It showed a lot of shots of the ship we were on: It was a gloomy, poorly lit and waaay too large ship. I'm talking like huge ceilings and expanses of dark lit by three blue lights. One of the most notable things was that the "top" of the ship held escape pods, and rather than having a simple way to access them, whenever a crew member's life was threatened jets on their suit would activate and whoosh them into a pod and eject them. In a movie-like cutaway, it is revealed that the ship was sanctioned by Earth's leader to find a source of immortality for humanity.
Now this is where things get weird because the leader is an ancient vampire who is sustaining the ship (magically?) and keeping the crew from aging somehow. However, as the ship moves further away the vampire's ability to sustain the crew weakens. In my dream I had the distinct feeling that the vampire was on Earth and telepathically doing this but now I think he might have been the captain of the ship, either way, that's a problem.
Then of course the movie-dream shifts and we are boarded surreptitiously by aliens. They use cloaking that makes them almost invisible except for a single point of blue light that gives them away. Naturally the crew shoots them when they see them, but over time and multiple different fights it's clear that they're going to keep coming. After a moment where my dad (I'm as confused as you are on this cameo) fights one hand-to-hand, the aliens seem to have some kind of contact-poison on their skin that drives humans to some kind of temporary rage and then coma; this wasn't encountered before because we all had firearms.
All throughout this, I was internally smirking because my dream-self knew for certain that he had "already seen this movie" and remembered a review that said that it was actually really shitty. So I was looking at all of this the same way people would look at a so-bad-its-good movie, while everyone around me was freaking out and shooting aliens.