This is a retelling of Dante's "Inferno" in novel form. Dante the Pilgrim travels through all the circles of Hell, including Limbo. His guide is Virgil, the author of the Roman epic poem the "Aeneid." After seeing Lucifer in the lowest part of Hell, Dante climbs to the Mountain of Purgatory. The rest of Dante's adventures are told in "Purgatory" and "Paradise."