My odd and barely remembered dream.

This dream takes place in what I could only assume to be a college, as there were dormitories, but my classes were the ones from my past year of middle school. The dormitory I was in was run by Professor Walsh from Buffy the Vampire Slayer. For some reason, all of the students had a small yellow briefcase about the size of a small alarm clock. Everyone said that those briefcases were "In case of Stone Mountain." For some background information, Stone Mountain is a landmark in Georgia, and I don't know why we would need yellow briefcases in case of it. Another thing I remember is that our Dormitory was floating in the air, like an airship. The dorm contained the rooms and bathrooms they usually have, but for some reason this one also had a hockey rink, a baseball field, and a basketball court. Did I mention this dorm had multiple levels?
Now, on to the actual dream. I remember being selected to investigate something. Either it was a murder or somebody went missing, but I think it was the second. Our college had a link to the world of some video game that doesn't exist in the real world, and people thought that the guy went there. I do not recall anything after that except the place was a forest. I do remember some things that happened after I came back, such as slipping down the stairs, breaking my neck, and continuing as normal. The last thing that I remember is having those yellow briefcases thrown off of the dorm with everyone yelling "Stone Mountain has happened! Abandon ship!" I was unlucky enough to be out of the dorm and on the ground, so I had to dodge the suitcases being thrown at me. Did I mention how high the dorm was off of the ground? It was about as high off of the ground as the hight of my (real life) house, so I could see them clearly. Then one of the suitcases hit me, and I woke up.