The narrative opens in the dark abyss of Hell, where Satan and his fallen angels recover from their violent overthrow by divine forces. Refusing to submit, Satan plots vengeance against the Almighty, deciding to target the newly created universe and its inhabitants, humanity. Guided by malice, he journeys through Chaos, evading monstrous guardians, and slips into the earthly paradise of Eden.
Inside Eden, Adam and Eve live in harmonious innocence, tending the garden and enjoying mutual devotion under God's single prohibition regarding the tree of knowledge. Warned of the lurking danger by the archangel Raphael, who recounts the celestial war and the creation of the world, Adam and Eve are reminded that their steadfastness depends entirely on their own free will and obedience.
Despite these warnings, Satan—possessing the form of a subtle serpent—approaches Eve while she is separated from Adam. Through flattery and deceit, the tempter persuades her to eat the forbidden fruit, arguing that it brings godlike wisdom. Eve partakes and subsequently convinces Adam to join her in transgression, driven by love and fatal curiosity.
The immediate aftermath brings a profound fracture in their nature and relationship. Internal guilt and mutual recrimination replace their prior harmony, while the external world suffers cosmic disruption as sin and death enter the realm. Although humanity is condemned to mortality and toil, divine mercy provides a future path of redemption, promising that human history will ultimately culminate in the triumph of grace over despair.
