From the back of the book:
... Welcome to the Tenebris
Locked within there are truths, dancing behind your lips, begging to be spoken.
Afterlife: Wandering Souls is a macabre fantasy tabletop role playing game set in the surreal plane known as the Tenebris. You take on the role of a Wanderer - someone who died but didn't end up in Heaven, Hell, or any other traditional afterlife. Devoid of any memories of your life on earth, you find yourself in an endless desert filled with gateways. Search different planes of existence for clues of your former life, or a semblance of one. Along the way you'll encounter strange inhabitants, alien cultures, and other humans who've lost all hope and are bent on destroying you.
Inside this book you'll find over 100 unique character options, mechanics, and full setting information - everything you and your friends need to explore the Tenebris!