Sora's Adventures of Sailor Moon SuperS: Vassago's Origin Story

Long before the story of how Sailor Moon and Sora fought the Dead Moon, and it's wicked ruler, Queen Nehelenia, Prince Vassago attempted to kill Queen Serenity, so that her daughter would never be born, leading to Endymion saying that his heart would belong to Queen Beryl, and all that had transpired afterwards would never come to pass. This is the story of how it all happened.