Magic Knights are modern magic-users who fight with weapons converted from their souls. Ikki Kurogane goes to a school for these Magic Knights, but he is the Failed Knight or Worst One who is failing because he has no magical skills. However, one day, he is challenged to a duel by Stella, a foreign princess and the Number One student. In this duel, the loser must be obedient for life. (Source: ANN)