The tales of Aegis Immemorial recount the deeds and exploits of a lone hunter, Danika Echo (known as Dan), as she travels in the vast reaches of the north. She is an iylmin, a member of a bioluminescent race who live below the ever-clouded skies of a broken world. Above the clouds, the dreaded Falls lie in wait: cursed meteors that bring with them the promise of death and destruction, and from which are birthed nightmarish beasts and terrifying monsters.