In Act I, Rowenna, a Saxon sorceress who is married to the King of Britain (Vortigern), plots to overthrow her husband and win Arthur's love.
Rowenna is cryptically told by the Fates that "Arthur's hand shall light the flame in which thy sorrows all expire."
Rowenna takes advantage of Arthur's distraught state and instructs her demons to tie him up after he sets down his enchanted sword.
In Act III, Rowenna poisons Vortigern believing that she will fulfil her fate and be free to marry Arthur after her husband's death.
The production was held in conjunction with a conference on the work of John Thelwall, hosted by the University's English department.
Due to his political beliefs, Thelwall was persecuted and subsequently exiled from England to Wales, where he wrote The Fairy of the Lake.