In the ancient continent 400 years ago, dragons ruled the world, and humans could only serve as food for the dragons. Later, the dragon clan was divided into two factions. One faction regarded humans as ants and food, and the two sides started a war. The other faction taught dragon-killing magic to humans to fight together. Compared with the chaos of the human world, there is still a pure land on the continent that no one dares to bully - the realm of elves. Elves favored by nature have extremely long lifespans and are gifted with magic. Almost every child born can do magic. The elves and the dragons have reached an unwritten stipulation that they will not invade each other. At the same time, they are cold and aloof and isolated from humans, occupying one territory. The world is divided into three. However, a black dragon and a group of demons broke the peace. +++++++++++++++++++++++++++++++++++++++