Is it normal that i dreamed about beign in a plastic sack pit?

So I had a dream about walking in a store and I went down into the basement where they store all the plastic bags well inside the basement there was this plastic bag pit I fell in and I heard voices around me but couldn't see anybody While I was dreaming I actually heard people talking but then Realized it was the fan that caused me to dream this is this a normal dream or not? I usually have really weird dark dreams like this.