Whats a short way to describe what The Inferno by Dante Alighieri is about?

Dante wrote that his poem was, on the literal level, about "The state of souls after death." The poem works on a number of symbolic levels, much like the Bible, one of its primary sources. Like that sacred text, Dante meant his work and his Pilgrim traveler to serve as models for the reader. He hoped to lead that reader to a greater understanding of his place in the universe and to prepare him for the next life, for the life that begins after death.