The Mahou Shojou or Sailor Senshi are the upgraded forms of the Princess of Heart and their Handmaidens, transformed into magical girl warriors by the strength and purity of their hearts to fight off against the dark forces threatening to conquer their worlds. Most of the Mahou Shojou fight for love and justice, but there is a single exception to this rule as the vile Sailor Eris, a.k.a. Drizella Tremaine, instead fights for the Hellfire Organization and their evil mission to take over the cosmos.