This is an AU of Metru Nui. Here are the Top 10 differences between the original and the AU:

1. Vahki are on the good side and have their own thoughts/personalities. Also, they're organized in ranks, like in the military. They're my favorite type of Bionicle... turning them to the shadows was wrong, in my mind. Maybe it's because all the police I've run into have been nice to me.

2. The city is ruled by a royal family instead of a Turaga. Termina is the queen. She technically has more power than Idenu, the king. Then there's Mina, the crown princess... that girl's a handful! They live in a palace.

3. "Humanoids" (self-explanatory) exist alongside "full bloods" (regular Bionicle types, like Toa and Matoran.) This doesn't mean they get along all the time, but there aren't too many problems. A genetic anomaly means approximately half of the male population doesn't have full anatomy.

4. Toa Metru have always been Toa Metru. None of the chaos where six Matoran turned into Toa and the Vahki went after them. Of course, this doesn't mean Matau doesn't get in trouble for his characteristic "Toa-hero" stunts...

5. None of those nasty vines, I have my own villains/antagonists. One of the antagonists, Maxine, is a popular humanoid girl... with an acidic attitude. No villains in this particular story.

6. They're not referred to as Bionicle, but collectively called "four-hearts." That's because they have four hearts - well, one's a heartlight, one's a regular heart, two are nodes.

7. Four-hearts don't start fully grown. They're born or "come in the night." As they grow older, they reach a certain age called "prime of life" or POL. In other words, their bodies are at peak fitness and they stop aging. For our protagonist Keika, POL is 17 years old (but that's a ways off, she's only 7 in this story).

8. Since they're born and grow from there, four-hearts go to school; Vahki schools are called "training centers." They're divided into different levels. There are also summer camps - mostly day camps at the training centers/schools/university. But there are also a few sleep-aways in parts of the city that aren't so developed.

9. Portals mean that characters can drop in from other universes. For example, Keika has a friend named Laney. Laney is actually Mulan, but a Portal accident brought her to Metru Nui and her name was changed for "safety."

10. No earthquake, no Matoran getting trapped in spheres, no Visorak overrunning the place. Metru Nui is a beautiful island city and I cried when I saw what became of it in the original story.

Finally, I don't own Bionicle. I do have a few OC, like Keika and her family.

Now... close your eyes... concentrate on the City of Legends... and let the Portal of writing take you to this fantastic world.