The theme of Euripides' Alcestis blends the primitive folk-tale of the self-sacrificing bride, Alcestis, and of Heracles' heroic struggles with the ogre Death, with a morality tale of "virtue rewarded," in this case twice rewarded. The theme of Euripides' Alcestis blends the primitive folk-tale of the self-sacrificing bride, Alcestis, and of Heracles' heroic struggles with the ogre Death, with a morality tale of virtue rewarded, in this case twice rewarded.