Last Night Dream

Last night i have this weird dream which it vividly in my head now. The weird thing is i dreamed of my two classmates which i've never contacted with.. It even happened in school too but i'm not really sure if it is... But it was a short dream and i can say it was a half dream too..

The dream goes like this...
"I was somehow bought to two of my classmates and i will not enclosed their name. Just named them J and S. 3 of us was standing in one place where in front of us was a field of grass but it was surrounded by water. And in front of the field water grass, there is another long desk with some weird plants on top of it and the plants have name cards but i can't see the name because it was blur. But the images of the plants were clear. My two classmates suddenly cross the water grass but they did not sink into it instead they are walking on it until they reach the long desk. They were looking at me but did not call me to go over that side. So without realisation,  i was standing on the water grass. I started to walk and i can walk on the grass.. I never sink until reach the long desk too. So 3 of us was examine and even touch the plants. While i was rearange one of the plant, suddenly i saw my two classmates was the other side already and they were looking at me, emotion less. I thought i should going back too so i cross the water grass again but this time i was scare because it seems that i was going to sink so i quickly walk faster and luckily i reach the wood bridge but this time i was at somewhere else. I was in a changing room and there are someone standing in front of me...."

And i was awake already... I don't know what is the meaning behind my weird dream. Probably it's a sign or something else but i'm glad i was awake... I'm just scared to think beyond of it..