A Tales of the Abyss side story that focuses on Jade Curtiss, also known as Jade the Necromancer.

Due to natural disasters caused by the world regeneration which took place two years ago. Two researchers, Richter and Aster, are trying to find the spirit Ratatosk who seems to be the only one able of restoring the balance of mana. (Source: Batoto)

The story begins after mysterious creatures named Archons suddenly appear in the world. Humanity faces the threat of annihilation from these creatures. Only the Chalice, the source of humanity, can defeat the powerful Archons. So, the humans assemble an Archon-slaying unit from fighters who have the ability to bring forth the Chalice to fight. The ones chosen to fight the Archons with the Chalice as their weapon are called Goulart Knights. (Source: Anime News Network)

Earth asteroid early 21st century, "Verne" in the past clashed with the effects of pollution on earth spoke of humanity and a devastating blow. The collision of the planet, while significantly lowering the surface and bring down the old continent "land and sea" to the emergence of a new earth. Human beings are the only contamination of land and sea rival warlords over the Warring States era.