The dark against the rest of us

"A little goes a long way." A small fact they had heard over a million times. A life lesson that saved all of them.
This story's about four teenagers that went to a school that used to be a mental institution, now being a school for children that want to have a good future, regardless of their scarring past. However, when these four kids realize the origin of what they truly are, and how the existence of their kind had killed their families and scarred their lives, they find themselves in an adventure they could've never imagined.
Fire, water, wind, and earth are what each of them represent, and with their newfound power, they must now fight the opponent that could lead their planet to the next mass extinction of humans: dark energy; a mysterious 5th element that had been hypothetical in the human race for centuries. In this story of despair, leadership, determination, acceptance, love, and survival, these teens grow into warriors of the world, and learn how far " a little" really goes.