In the future, two thirds of the population of the Earth is destroyed due to various natural disasters. Shadow Angels, winged immortal creatures, whose civilization was destroyed 12,000 years ago, awaken from the sleep. Shadow Angels decide to take revenge on the people and subjugate the world again. But humans are not willing to sit and wait for the end. From the bottom of the sea they pull out three Vectors, fighting machines once created by the Shadow Angels. The war has been lasting for 11 past years. People are getting less and less, but the mythical beasts also often lose to the giant robot. Both sides are waiting for the Solar Aquarion, the reincarnation of angel Appolo, once having destroyed his own compatriots. He is able to return to the Tree of Life its former greatness. But he also can stand up to protect people, to reveal the true potential of Aquarion and destroy angels once and for all. The fate of the world depends on his choice.