The story of Cupid and Psyche is forms a sort of labyrinth in the eight octagons of the vaults surrounded by golden stuccoes and in the twelve lunettes of the Chamber; the story ends in the central frame, where Psyche, after having completed a series of difficult tasks, is finally allowed to enter the Olympus, where she becomes immortal and can marry Cupid. The various steps of Psyche’s journey have lead her to discover the dark side of the divinity, such as when she is forced to reach the infernal river Styx to steal some of its water.