"Purgatorio" is the second part of Dante Alighieri's epic poem, "The Divine Comedy." It describes the journey of the main character, Dante, as he ascends the mountain of Purgatory, where souls cleanse themselves of sin before entering Paradise. Each level of Purgatory represents different sins, and the souls work to overcome their shortcomings through repentance and reflection. Throughout his journey, Dante encounters various souls, learning their stories and the importance of humility and forgiveness. The poem emphasizes the idea of hope and redemption, illustrating that even those who have sinned can find a path to salvation through sincere effort and divine grace.