The story takes place in the fictional world of Remnant, composed of four kingdoms (Vale, Mistral, Atlas and Vacuo), that are invaded by malevolent monsters known as the "Creatures of Grimm".[16] Prior to the events of the series, the world was overseen by two opposing deities, the God of Light and the God of Darkness. Humanity was obliterated by the gods, due to the actions of Salem, a vengeful woman cursed with immortality for trying to manipulate them into reviving her beloved Ozma. Ozma was subsequently reincarnated by the Gods to guide a new human race toward harmony and after succeeding, summon the gods back for judgement using four relics, the Staff of Creation, the Sword of Destruction, the Crown of Choice and the Lamp of Knowledge, leading to an endless conflict between him and Salem. The discovery of the element, Dust, triggered a technological and industrial revolution for humanity.

The deity brothers themselves were born in the Ever After, a world that is the setting of the fairy tale The Girl Who Fell Through the World. They were created by the world's Great Tree to help it make the Ever After, with their first creations being the Curious Cat and the Jabberwalker, the brothers' differences and arguments forced the Tree to send them out of the Ever After, where they could create and experiment until they understand the true nature of balance, eventually leading to the creation of Remnant. The Curious Cat wished to leave the Ever After with Alyx, the main character of the story, and learn why their creators left, but she decided to stay behind and make up for the damage she had caused, breaking the Cat's heart and driving them to insanity who killed Alyx, with her brother Lewis returning to Remnant and telling the story as he wished it had happen.

In the present day, having formed a cabal to guard their world's secrets, one of Ozma's incarnations, Ozpin, establishes academies in the four kingdoms. you are zar the hedgehog and you have a brother named sonic the hedgehog