You must destroy the guardians surrounding the 5 Pylons that power the Prison of Immol'thar. Once the Pylons have powered down, the force field surrounding Immol'thar will have dissipated.$B$BEnter the Prison of Immol'thar and eradicate the foul demon that stands at its heart. Finally, confront Prince Tortheldrin in Athenaeum.$B$BReturn to the Shen'dralar Ancient in the courtyard should you complete this quest.