Eddy Chen/HBO The third season of Euphoria is officially come back after a major delay - but not every fan favorite is returning for more episodes of the show. Euphoria, which premiered in 2019, follows troubled high school student Rue (Zendaya) as she struggles to remain sober after rehab. The ensemble cast initially included Hunter Schafer, Alexa Demie, Jacob Elordi, Sydney Sweeney, Maude Apatow, Colman Domingo and more.