I based the quest on part of the Ramayana. You have to get Hanuman, and his monkey army, to help save Princess Sita form the evil demon Ravana.
It is a basic 'kill quest' with a few fun things thrown in. For me, the best part is the spawnable blue NPCs as your 'helpers'. I found a script package that creates blue NPCs. So I edited one of their fighters into my own character (monkey army). There is a doc file with setup instructions. One page of instructions and 6 pages of descriptions, and ramblings.
The quest boss is a sequential spawner, similar to a mini-champ. That was also fun to learn.
Setup is easy. Copy the folder into your directory of choice and run the ramayan.xml file. All the XMLSpawners are setup already.
I included a couple add-on arches, for possible dungeon entrance decorating. You may already have them, as they are part of the standard add-on packs floating around the interwebs.