Thousands of years ago beings who were pure energy existed. They were the world, and of the world, and they held the powers of life. Fire, Ice, Lightning, Wind, etc., were theirs to call and command, and they kept balance over the universe. But those they watched over became greedy and hungry for power;, and they coveted that which was not theirs to have.
Seeing that things would become ugly otherwise, the beings condensed themselves into solid forms, taking on the shape of gems that contained their power. Each gem found its way to a planet with a ruler who was worthy, and their powers seeped into those planets and the people of them, giving them elemental powers to call their own.
Warriors of these planets use their elements to protect people, though time has passed and the beings have long been forgotten. But once again, greed and hunger are spreading, and a group of dangerous individuals seek to take what isn’t theirs, going planet by planet to try and find the source of the elemental powers and take it for their own.