A world that suffers from an emptiness that devours people and a disease of the mind… The only way to solve the situation is to summon a being from another world and sacrifice them. Those who were chosen as sacrifices were all old or wounded and were on the brink of death, and they gave their lives for the world, receiving everyone’s respect. Now, the situation requires one final sacrifice. After completing the summoning ceremony, the priests believed that everything would end well with this ceremony. Until their leader brought the dying sacrifice back to life. Meanwhile, Shin Hana, who was dying in a deserted place due to a car accident, hears a voice calling her.