The protagonist of this novel is Xiao Yue, a senior one student, 16 years old. After defeating Kalius, the demon king of another world, he accepted the dying request of the demon king and promised to take care of his daughter. After returning to the original world, Xiao Yue and others, under the arrangement of the government, entered the international educational institution "Babel", which specializes in caring for and protecting people returning from other worlds. Xiao Yue, who has just returned to the real world from the Demonbane world, is the first "real brave" who defeated the devil since the establishment of Babel, attracting many people's attention. In the international educational institution "Babel", Xiaoyue also met many students with different personalities and various magical skills, and launched a brand-new battle with them. And the devil's daughter, in getting along with abortion, slowly found that abortion is not so rogue on the surface. She was attracted by the inner tenderness of abortion and gradually fell in love with abortion.