For those willing and desperate enough, a trade for power can be made for half of your soul. Four individuals are hired by HSEA (Halfsoul Extermination Association) to hunt and exterminate those who trade their souls, which quickly becomes a struggle of mixed feelings and personal demons. Nalia struggles with the scars of being an outcast after decades of belittlement of her invisible disability. Working for HSEA has given her a place to fit in, but her conflicting feelings about the morals of HSEA makes her question her true wishes.