Ultraman, the guardian of the earth, has defeated and expelled countless evil aliens who intended to occupy and destroy the earth. But these aliens took advantage of Ultraman's mission at the edge of the universe to invade again. Faced with these alien invaders with various abilities, Ultraman's successor and a new generation of guardians of the earth, the Steel Flying Dragon, stepped forward to assume the important task of protecting the earth. The five team members with different personalities, under the guidance and blessing of Ultraman, and through battle after battle, understood that only by working together as a team and learning from each other's strengths can they defeat the increasingly powerful alien invaders.