One day the Monsters broke the barrier that was keeping them trapped underground. It's been 15 years since that day. There has been an ongoing war between the Monsters and humans ever since the Monsters first arrived on the surface. Humans have soul traits. Schools are now training for the war and to use their magical abilities, which they get from their soul trait. Everyone has a different SOUL trait if they are a traited human. Right now there's a small army of monsters attacking the city