A man named Xavier was about to get married to a girl named Alice, But their marriage was cancelled because the king of the kingdom Vighlodir, King Claudius requested Xavier to marry his eldest daughter Princess Guinivere. He was clueless about what's running through his blood until he pulled the legendary sword "Excalibur" upon a stone. And due to his incredible power, he got the full attention of the Royal Family. When he is about to get married to Princess Guinivere, A unexpected guest suddenly came. The Princess of the kingdom Xazidel, Princess Nathalia, interrupted their wedding by telling them the truth about Xavier's parents whom he thought died during the battle between Xazidel and Vighlodir. After that day both kingdoms fought just to win the possessor of Excalibur.