Ban Yu-won can understand all the languages in existence. He was able to translate every language, modify it. As a child, when Ban Yu-won first learned about the existence of the fictional building called the Tower of Babel in the Bible, his respectable grandfather told him it was their ancestors who built it. “The Tower of Babel was completed without collapse, and people have the wrong idea.” One day, out of the blue, the Union Academy practical exam began. Finding traces of his ancestors at the academy, Ban Yu-won decides to enroll in the academy full of monsters.