Troubled Teen~You're depressed, violent, emotional, or scared of everything. Sometimes it's a mix of all those things. No one wants to be your friend, you never knew who your real family was. You were in an orphanage for all you can remember. You try to look strong on the outside, but on the inside, you're longing for someone to care for you, a shoulder to lean on. Someone to dry your tears at night and someone to make you happy on the holidays that you've never really gotten to celebrate.
Now, maybe that chance has come. The orphanage set up a new program for ages 14 to 17. You aren't given a choice about taking part in it, either. They tell you the program is going to help, that it'll make things better. A bunch of unemployed soldiers, police men, or firefighters meet you one day in the local High School gym. Each one has a number, and you are given a card with a matching number. The one with the number matching yours is your mentor. The person who you'll be spending the next whole summer with, and maybe, the rest of your school years. 
Mentor~You just got out of the service, weather it be a firefighter, soldier, or policeman. You still long to help the community in some way, you want to do something, have someone young to keep you active. You've thought of having a dog, but that's just not the same. You see an add in the paper looking for Mentors for troubled teens, and you call. A few days later, you get the letter saying you were accepted and your given a number. The plane tickets are there for those who need one, though most are local. You may not be the most paitent of people, but you're single, have nothing to do, and want to find a way to help an issuse that isn't given enough attention. The four major elements are fairly well known. Earth, Air, Water, and Fire. The Avatar is claimed to be able to bend all the elements. But the world isn't made up of just Earth, Air, Water and Fire.
If there are only four elements, then why are there eight petals on the white lotus, and why are there nine circles in the very center of the White Lotus? Why is the Order Of The White Lotus kept so secret, and who else is part of it?
In the ancient days, there were many more benders. But they didn't just bend Earth, Air, Water, and Fire. There were benders for each petal, and each circle in the White Lotus symbol.
The center was for the Avatar, master of ALL elements.
Then there was Shadow, Light, Mind, Blood, Weather, Earth, Air, Fire, Water.
Eight Elements. Eight Petals on the White Lotus.
Shadow, Light, Mind, Blood, and Weather were forgotten by most as the benders began to disappear. But if Blood bending was discovered again, what if the other are re-discovered? That was what the Order of the White Lotus dreamed of. Keeping alive the nine elements. Before, many years ago when the nine elements thrived, the Order of the White Lotus was founded to keep the peace among all the kingdoms. The Earth Kingdom had been smaller, and there was equal land for all the benders. But the Earth Kingdom got over confident, and war started. Many of the benders lost their homes and their family, and with that, they lost their hope and their will to keep fighting. Thus, four of the eight elements perished and were forgotten by all who were outside of the Order of the White Lotus.

Now, those elements are coming alive again. Blood bending is already spreading fast, and though it is used for evil, a few who live secretly use it for good. Shadow benders are hiding in the shadows, coming out at night to feed from the darkness and peace that the night time brings. Mind benders often sit in public places and read, or will send thoughts and ideas and dreams to children or people who might have a rough road ahead. The Weather benders are often the news reporters, or live isolated from others, where they can change the weather as they please.