Well, it's an interesting concept and it makes sense that it's weird because it's based off a dream, but I think it's a bit too short. It could really do with a bit more ambience and slower animation, cause the way the other guy who talked showed up was a really fast transition, it kinda breaks the pacing, and so does the way the pink person is shown hitting the ground. It needs to be a bit slower, and if you wanted it to have an effect of sorta being swallowed, you should have left it until the very end so it could have more impact and had another scrolling build-up shot of the people falling or something else.
Basically this has conflicting pacing between the atmosphere and animation, you need it to be a bit longer in the future or just try to animate it so it's slower or leave the movements with a lot of momentum to be at a more impactful point in the animation. Just keep that in mind if you're making this a series.