In a not-too-distant future, Earth is besieged by ethereal creatures known as the "Phantoms," which devour the souls of any human that crosses their path. Humanity has taken refuge in cities protected by shields, trying to survive this threat. In this dramatic context, Dr. Aki Ross, a young and brave scientist, embarks on a crucial mission: to uncover the key to defeating the Phantoms and saving humanity.
Aki is obsessed with a mysterious spiritual power that seems to connect humans to the world of the Phantoms. Alongside a group of brave soldiers, including her protector and leader, Captain Grey, Aki ventures into a perilous journey, confronting her own fears and past traumas. Her quest leads her to unravel hidden secrets of her own existence, as well as to discover that not everything is as it seems in the fight against these entities.
As the pressure mounts and the protective shields begin to fail, Aki must find innovative ways to use her connection to the spiritual world. With the hope for a bright future, she becomes the key to uniting science and spirituality in an epic battle that will determine the fate of humanity. Facing sacrifices and difficult decisions, Aki must decide how far she is willing to go to save her kind.