From the introduction:
You are a sorcerer.
One of the few mortals that study the secrets of reality, unearth knowledge long forgotten, and spend the lives of those beneath you like mere coins.
However, your ambition is beyond what your limited time in this world offers, and so you must find the secret to immortality before your time among the living runs out.
You will try to become a lich: a powerful undead sorcerer that binds their soul to the mortal world by some obscure ritual of necromancy, perilous pacts with foul demons, unspeakable sacrifices to forgotten gods, and mastery of other unfathomable truths inaccessible to other mortals.
Everybody dies.
But not you. You are called to survive them all and untangle the most well hidden secrets of the cosmos, even if the price is beyond what any other mortal is willing to pay.
You are called to lichdom.
Lichdom is a solo roleplaying game (RPG) about the ambitious journey of a sorcerer towards immortality, about the careful research to find lost knowledge in crumbling tombs and half buried cities, about overcoming the deathly perils that plague the world by sacrificing your own self, and about finding a way to keep your soul tied to this world at all costs before death comes knocking on your door.
Your time is running out.