What is the summary of King Arthur legend of the sword?

The legend of King Arthur centers on a noble king who wields the magical sWord Excalibur, symbolizing his rightful sovereignty over Britain. Arthur, raised in obscurity, pulls Excalibur from a stone, proving his legitimacy as king. He establishes the Round Table, a symbol of equality among his knights, and embarks on quests, including the search for the Holy Grail. The tale explores themes of chivalry, loyalty, and the struggle between good and evil, ultimately culminating in Arthur's tragic downfall and the end of his reign.