There are four elements: air, water, fire and earth. And four controllers currently in existence. Just four, no more, no less. These controllers control the elements, and keep them at bay. The controllers are extremely powerful, but dangerous. The elements shall be united when ready, but from them on, misfortune will strike.

I'm sure your mundane mind is buzzing with questions. Who are these controllers, you may ask? Only four can exist at once, Elementals being picked randomly. This generation's controllers are four teenagers: Grover Underwood, Luke Castellan, Annabeth Chase and unknown, all with immense power.

But of course, power is a thing to fear. Imagine four people with the power to control the very oxygen you breathe, to turn your plants against you, to be able to drown you all with one motion, and to be able to set you and your houses on fire. A human's first instinct would be to liberate the threat immediately.

And so, the three live in constant fear for their lives, afraid of being hunted by mortals, the government against them. Death is their punishment for existing. On the run, switching from city to city, country to country, just to prolong their awaiting deaths.

And why do they even have the power, if it's such a dangerous thing? It's dangerous, but necessary. Someone needs to keep the elements at bay, or the world will be left in a state of chaos. The backstory behind it?

Long ago, there were four powerful warriors. Destined to either be the best of friends, or the worst of enemies. They chose to be enemies. Four were at war with each other, each taking a different approach to the other. Seuz took the path of air. Desah took the path of earth. Eisonpod took the path of water. And Thuphaeses, somehow different to the others, took the path of fire.

That was a war with no victor. All it caused was havoc and destruction. They ended up destroying each other. Lives were lost, people were in all sorts of jeopardy, grieving for one another, and the human race paused its advancement.

Their powers passed on to each generation, the four were destined to be the best of friends...or the worst of enemies.