The bird of the warehouse

I had a dream before this, it had something to do with GTA and the mafia, but it's so unclear I can't tell anything about it.

I'm in a strange warehouse complex with my friends V and L. It's very dark, I can only make out the shape of objects away from me. In addition to the containers stacked on the floor there are containers hanging from the ceiling. Each with one cable attached to the center so that they are balanced. We start to hear strange sounds and start to suspect that someone else is here with us. Somehow we split or drift apart from eachother, and when I realize it they are already gone from my sight and I'm alone. Out of nowhere a giant eagle lands infront of me. I find it isn't hostile, but friendly. I mount on the eagle, and it starts flying. I decide to pull a prank on my friends. We start to prod the containers and cables in the ceiling, making quite a racket when they crash into eachother. My friends return and seem very confused. They can hear but not see us. Finally L spots us.

I Think the REM-phase ended here, because the dream blurred very fast and I don't have any memories of it continuing. I never had the opportunity to explain the situation to my friends. The time is an estimate, since I didn't wake to write this one down.