Gigantic Mechanical Brain Gillvalis and the Galactron Army intent on wiping out all intelligent lifeforms in the universe close in on Earth. Riku Asakura heads for Okinawa where there are said to be clues to the quot-Red Steelquot- sought by Gilbaris. There Riku encounters Ail who realizes that he is Ultraman and assigns him an important mission. Meanwhile the Galactron Army begins attacking Okinawa in search of the quot-Red Steelquot-. Ultraman Geed Orb and Zero rush to Earth but Geed's hasty actions in sticking to his mission put the Ultraman team in even more danger!