OK, here's different appraoch. I clicked on this thread in the first place because I have had extraordinary dreams too - and your acoustic thread I mentioned. That said, it's tough to go into deeper layers without actually seeing a person for cues, like a grin or recoil or thoughtful look. I'm not a super analyzer, but we've talked about dreams in my family for years. My mom's a big healer, my dad's really rational and I'm a halfling.
I'll just play it back. Clearly, there is danger. jeez a lot of drugs. You slip into it by accident (slippery mushrooms, 'fungi'). It's a cruel environment. The people are weird, stupid, jacked-up. Loved ones are in danger (your brother). Others are helpless (the 2 women prisoners). There is killing.
It's all cautionary. Watch where you step.