In this game, set in the Land of Fumes, this prosperous magical superpower hosts vast quantities of magical resources hidden beneath the surface. In their effort to advance their kingdom, artificial lives known as Homunculi were created. Unfortunately, the toxic fumes from underground drove the Homunculi mad, turning them into wild monsters.

The player takes on the role of Lilac, an "Attuner" who possesses the power to save the Homunculi. Upon awakening, you find yourself in a laboratory deep underground. There, you will meet the Homunculi connected to the fall of the kingdom. Together with the Homunculi, embark on a quest to recover your lost memories and precious friends in the Land of Fumes. Follow the journey of destruction and rebirth in a post-apocalyptic world, decades after the catastrophic Rain of Death.