Elements: the rise

In a world full of people with elements. Like water, fire , earth , and air. But war has broke out and the only way to stop the war is to start assassinating the leaders from war. Flame, shark, wind, and foliage are the " Teens of destiny" meaning the teens of Destiny are going to stop the world war.
" the elements are coming,
The elements are coming,
They're coming to save the world,
They're going to fight,
For our precious world,
They're going to solve and do what's right,
The elements Are coming!" Sang people all around the world, but what happens when these teens are bought into prison.