After King Arthur's many adventures, his son Mordred seized his kingdom and queen, forcing Arthur to fight for what was truly his. They fought for a long time. Mordred hit King Arthur in many places, but in the end Arthur killed Mordred. After this victory, King Arthur was weak and died of blood loss from battle wounds. As his knights rode back to Camelot, they threw Excalibur into the lake so that it could return to where it came from. One legend says Arthur never died, and will return when the British need him. 