She-Ra and the Princesses of Power She-Ra and the Princesses of Power is set on the planet Etheria and follows the stories of Adora and Catra, orphans who were raised to be soldiers in the Horde. They are part of an evil army led by Hordak, a tyrannical despot who dreams of conquering the planet. One day, after getting lost in the woods, Adora finds a magic sword that transforms her into the legendary Princess of Power, She-Ra. After learning that the Horde is actually evil and has been inflicting suffering on Etheria and its inhabitants, Adora decides to join the Rebellion in the fight against the Horde. She helps rebuild the Princess Alliance, a league of kingdoms ruled by other magical princesses. Adora's newfound allegiance to the Rebellion pits her against Catra, her former best friend, whose feelings of betrayal and abandonment twist her personal ambitions and lead her to become Adora's mortal enemy. Much of the show centers around their conflict