Aberrations are the beings of the Dark World. For a long time, these unique and mysterious creatures were only known of in the most obscure and agent of legends. However, the newly discovered Seer of the Colleges, with her unprecedentedly powerful divinations ability, as allowed a look into the Dark World and the creatures that live there.
This could not come at a better time, as the aberrations have been on the move. Individual beings have somehow traversed the seas under their own power, landing at the New World. With little knowledge besides the cryptic sayings of the seers, it's of utmost importance to repulse these unpredictable creatures before they do too much damage to the world.