The story is set in the galaxy located near the center of the universe.
There are Planet Aernia (a planet for Heroes) and Planet Orbs (a planet for robots), governed by Orbiton, in this same galaxy.
Various countries are present in Planet Aernia; they are, Volculm (volcanic country of fire), Zylan (oceanic country of water), Elvan (green-rich country of forest), and Aleum (celestial country of clouds).
Antania, is a nucleus of all the present countries. It has an academy that fosters Heroes.
Under the reign of the Governor General, Antania upholds a national policy to train Heroes to prevent Planet Aernia to be infringed by the Dark Desire.
Heroes are not only the reliable source of battle who have special abilities to freely use the battle discs, but also a symbol of unfailing justice.
Álex has just suffered a love disappointment and sends a voice message to his boy friend in anger but the voice is received by Bruno. This mistake ends up making them meet and what begins as a date ends up having greater significance.
After a foreign teenage tourist goes missing in a misty village, Kasturi, a frazzled local cop, is forced to team up with her city-bred successor, Angad, on a high-profile case that unearths skeletons and resurrects a long-forgotten legend of a savage serial killer in the woods.
