This takes place in the future where Diamond Tiara screws everyone over and is alone. This causes Luna to visit her dream to teach the filly a lesson. The words are actually from "Where Will You Go" by Evanesence.
Edit 1: I finally finished coloring in the characters, and have started to work on the background. I decided that Tiara's dream would take place in a room in a prison tower of a castle due to her feeling banished from her peers. Hence Luna relates to the feeling of being banished and thus helps the filly to realize that being mean really isn't cool and will often lead to lonliness. Still a WIP though.
Edit 2: I'm finally done!