Contemplating the feast given by Herod, Narraboth, the young Syrian, only has eyes for Princess Salome. Indifferent to the discussion of the soldiers, he hears neither the page, who advises him to divert his gaze, nor the disturbing prophesies of Jochanaan who has been locked up in a cell on the orders of the Tetrarch. Salome appears, seeking refuge from the ogling of her stepfather, Herod, and the debauchery of the guests. The voice of the prophet rings out again and the princess speaks of the Tetrarch’s fear of this man who has cursed her mother, Herodias, for adultery. Seized by a violent desire to see and speak to him, Salome turns to Narraboth and, disregarding the soldiers’ refusal, extracts from him the order to have Jochanaan brought out. On emerging from his cell, Jochanaan defies Herod and reviles Herodias, impugning her with every villainy. Salome is fascinated by this man so different from all she knows. She voices her desire to touch his body and kiss his mouth. Unable to bear her gaze, the prophet repulses her, while she shouts out her love for him, deaf to the supplications of Narraboth, who, despairing when she does not hear him, kills himself. Jochanaan curses her and returns to his gaol. The Tetrarch and Herodias appear in search of Salome. Herod is worried. He stumbles over Narraboth’s corpse and asks that it be removed. The queen urges him to come back in, but he invites Salome to share his meal. The Jews, then the Nazarenes, enter into an argument about the coming of the Messiah, a debate punctuated by the imprecations of Jochanaan. Paying no attention to Herodias, who, beside herself, begs that he be silenced, the Tetrarch entreats Salome to dance for him. She refuses, but he insists, swearing that he will give her anything she desires. Salome accepts, in spite of her mother’s protestations. The dance leaves Herod in ecstasy, ready to grant the recompense he has promised. Salome demands the head of Jochanaan. Horrified, the Tetrarch tries to dissuade her, offering all his treasures in exchange. Salome stands her ground, reminding him of his pledge. Exhausted, Herod capitulates. The execution takes place in silence in the prison. Having received the reward for her dance, Salome takes it and kisses the mouth that scorned her. Herod turns his back and orders the soldiers to kill Salome.