Set in the future, a giant fighting machine called the Aquarion is humanity's only effective weapon in the fight against the technologically advanced species called the Shadow Angels.
Once upon a time, human voices had defined the true nature of all things, yet the invention of text changed the status quo, while creating a "Logos World" between the voice and the truth. Millennia have passed since then, advancements of civilizations have made the "Logos World" too big to control "texts." A group of young people dedicate themselves to counter chaotic "texts" with "Creative Voice Power," and among them, a boy named Akira Kaibuki living in Asagaya.