Hérodias is the retelling of the beheading of John the Baptist.
Herodias gives a big birthday feast for her second husband, Antipas. Herodias abandoned a daughter for Antipas, only because her ambitions would be better served with him.
John the Baptist is already being held in detention, but Antipas has no wish to execute him. Herodias concocts a successful plan for getting Jon the Baptist finally decapitated.