The jail on the desert island and predator...

The earliest part of this particular dream that I can remember is standing on what looked like a small island that was covered in sand and it had a rather small jail on it. I don't know whether I was working at the jail or doing time but I 'walk around' and see other guys sitting around, eating and listening to music. The mentioned 'guys', myself and all other mentioned events take place outside of the boundaries of the jail, although the gates of the jail remain very much visible, throughout the dream.
A song that I know comes on the stereo and I tell them that it's a good song and to turn up the volume.
Funnily enough, it's a song called I Never Dreamed.
For those who've never heard it:
http://au.youtube.com/watch?v=rfnZw5D8_vM
The first actual 25 seconds or so of the song, I could hear in the dream.

I continue my walk and what happens next I don't remember.

I suddenly seem to reappear on a different part of that small island where I see predator (yes, the creature from the movies). I don't know why, since I've never been a fan of the movies or anything but surely enough, it was him - or it. There was some other strange flotation device on the water that seemed to belong to him as he walked around on it for a few moments and then he came towards me in an attempt to attack me. I don't remember whether or not I had said anything but I do remember thinking that I'm no threat and that we could get along. He withdrew his attack and I remember asking him how he had managed to escape from the jail. Although predator didn't say a word, I felt as though we were communicating telepathically since I visualised the way that he had escaped (by jumping over the fence) which I know realised was much lower than before (just over a metre tall).

He returned to the floating device that I mentioned earlier and then when I turned around I saw two men with large spears chasing after a man that was desperately trying to get away. I remember getting in the middle of the fight and it seemed as if only the victim was able to see me, (this becomes obvious to me later on). The 2 attackers kept stabbing the man. The victim somewhat resembled an 'older version' of an old friend from high school. The face of one of the attackers also seemed distantly familiar. I physically put myself in the middle of the fighting trying to break it up and their spears seemed to go right through me. Not in the way as if I was a ghost or something, they pierced flesh alright but I didn't feel it at all and when they were pulled away there were no wounds. It did indeed seem as if the attackers were unable to see me.

I remember shouting out to predator to help me break up the fighting that was taking place but he either failed to understand me or had chosen to ignore me.

I don't know what had happened in the next few seconds but I do remember something like re-appearing again to find that the two attackers were now dead and were quickly decaying into the sand below. The victim who was still alive was lying on his back next to the waterline and he had several hundred stab wound all over his body, face, arms legs - literally, everywhere.

I also remember getting down next to him to ask him if there was any way I could help him. I asked him this several times and then asked if he wanted me to bring him a drink of water. I also repeated this a few times and I remember him saying that he doesn't think we have any more left.

The very last thing in this particular dream that I can remember is me telling him not to worry about that and that I'll be right back when I find some.

I stand up, turn my back, start walking away and wake up.


Pretty weird stuff right there :D

Any hints or attempts to interpret the dream or any parts of it are much appreciated.

Thanks in advance.