Divians started to appear in the world in 2008, the human races is in great danger humans fight for their races but the Divians is more powerful than they thought. Guardians who had hidden in the shadow for hundreds of years, Show up themselves. Guardian started to help humans all over the world in hopes of winning the war. Aside from Guardian there are people who has abilities, and we call them Users. Easton had lost everything to the war, his home, his family and the only thing he inherited was an old book that he couldn’t even open. But when the book finally opened, Easton was granted a system and his whole life was turned around. He was given quest, he completed quest to quest and became more powerful, not until one day the system itself gave him a quest he wasn’t sure he could complete.