GDreamer's spaghetti

I was walking home while my friends were fooling around on the street
I walk through the way from the bustop.
But then an old guy , grey hair, grey-white suit, appeared and flew up in the air.
At this part the dream became foggy , the next I remember from now I'm in a big building.
Actually an infinite building. The old man , lets call him the sage.
He was full of wisdom he telled me big things about humans
but I do not remember any of those.
Then I continued my journey in this infinite house
I was facing with different memories of my life , sometimes just conversations, I had.
Then I entered a museum where there were no lamps ,but there were light.
And the paintings were surreal as hell. It scared me a bit
then I continued my way in the museum.
I met with my friend in a sector where were vintage sofas and chairs
we sat down ,He asked what do I'm doing here I answered that I'm on a journey.
He said that he's on a trip.
I was aware at this point that the museum was meshed up with this world I'm in for a purpose, and that he doesn't know this .
Then he gave me a red tie "for the special events" and I put iit in my pocket.
then he leaved , the sage showed up again.
We spoke again I tried to find out why is he do this to me , he said he want me to learn something , or thats all I found out from his speech.
Then a scene started on a vintage bed. In anime style.
A girl tried to wake up his boy, but then it turned out it was not his brother but her dead self , blood all over her face ,eyes open stare stiff, horrifying.
Then I seen another girls face in negative vision , anger was on her face , then my vision normalised and at this point I said "this is bullshit, I'M OUT" And I woke up.

I think it was some kind of trial , but I aborted it.
I never met with a dream character having this big power.

Now I want to meet the sage , but now in lucid state.