The action takes place during a Spanish attack on the Moorish capital of Grenada, where Almuzir has deposed and killed the legitimate King and usurped his throne. Almuzir is in love with Zoraida, but she is already betrothed to general Abenamet. Machinations ensue and, though Almuzir tries to dispose of Abenamet, the general outwits the ruler by disguising himself as an unknown knight. Will Abenamet finally win the day and the hand of his beloved Zoraida?