disappeared

A repetitive dream again.
The part where folks are invited into a huge, dark (or maybe for the outsiders it's invisible) room or ship. From which they'd simply disappear. Is that teleporting them or a physical gateway through a cave?
The next picture - We (who didn't get in?) are riding on a bus, and feeling a strong connection with each other. All in silence, as if we knew what we're thinking anyhow.
Before that, it seemed like, while waiting at a terminal, found and took others' shoes (or maybe boots - wintertime?) because I'd lost mine, or others had taken them.