The world was thriving and at peace when suddenly, up from the abyss, rose a wave of darkness. No one knows where this darkness came from, nor why it is slowly making it way around the world. It began in rural areas, cascading over the villagers and towns, corrupting any who could not fight off the anguish, despair, and regret the wave invokes in whoever it touched. Those who had fallen to its touch, transformed. They grew sadistic, angry, and violent. They developed abilities and magic far stronger than any mortal man could wield. They had a calling within them, to follow the wave and spread it across the land. Soon armies of these vicious beings began to arise and sweep through the towns and villages, consuming each in darkness. Those who did not fall within the abyss were slain and those who were tainted joined the ever growing army. These tainted being eventually gained the title of Grims and they were feared by all. Villages, towns, and soon cities were fearing that the wave would come to them next. 

Upon seeing this, the goddess of light decided there needed to be a change. Her powers sought out those pure of heart and who were strong in their convictions. She granted them a powerful skill that could combat the Grims and the dark wave. She provided others with the means to defend their homes from the darkness, sigils that glowed brightly even in the day. Cities were learning to expand upon these sigils and carving them into the walls that surrounded them. Those who were prepared found their city impenetrable by the darkness. The wave of abyss simply split and went around them. And so these cities became safe havens for all who sought protection from the darkness and strongholds for the gathering armies of light. Soon these warriors of light developed their own name as well, Light Bearers. 

So now they fight, to push back the darkness, to kill off the Grims, and to eventually bring this world back to its peaceful wonder.