Los Ultraman rivales Tiga y Dyna unen fuerzas y los científicos construyen el arma definitiva para defender la Tierra de un ataque de demonios intergalácticos.
A woman calling herself Princess Oryu enters the woman's prison. She is Kasumi, the daughter of the famous magistrate, Ooka Echizen, who slowly after hearing each of the prisoner's stories begins to realize the mystery that lies behind what it could be a big conspiracy.