Elements

In a dystopian world.. a war is happening. Several years ago in the "old world" there was a nuclear explosion that was set off to destroy the world.. it was set off by unknown people.. but the bomb malfunctioned.. on purpose. The bomb was supposed to just eliminate half of the world. But apparently, someone who was working on it made one tiny mistake, some think it was a miracle, others think it was a curse. Most believe it was an accident.. some believe it was on purpose. Instead of wiping out the whole earth, the bomb instead.. caused a huge fog and colorful smoke. The bomb didn't go off.. it just released a deadly smoke. And it was directed by the government and military that people needed to all go to Washington DC. When everyone left in the world who hadn't already died arrived to Washington. They were told that they would be safe in Washington only because that's where the government and military would protect everyone. Then suddenly, planes started attacking and an opposing group of evil people declared war.
Fast forward a few years.. the war had stopped, scientists found elements that could save the world and everyone got one when they were released into the air.
when they released the elements into the air and they all decided to live in harmony. Until.. the same bad group declared war again and started attacking. When different elements started disagreeing on who should attack who on the bad side, it broke out an even worser war between the element people. Now elements are all separated into their own lands. Fire elements. Ice elements. Earth elements. Water elements, And air elements. When two men set out to find the crystals for all the elements they are murdered, so two girls decide to do it instead and set out to find the crystals of the elements.