Once, there was a "Giant of Light" who fought against the threats of giant monsters and invading aliens to keep the Earth in a state of peace. His name was Ultraman. Time has passed since he left Earth after completing his mission as Hayata, a member of the Science Special Search Party (SSSP), and humanity has entered an era of prosperity. However, it was only an ostensible peace... Now, when the power of the "Giant of Light" is once again required, a new hero who has inherited the factor of light appears. But he is no giant. He's a life-size, troubled high school student in a reinforced suit with a metallic body... His name is Shinjiro Hayata. A new story of the son of Shin Hayata, the former Ultraman, who struggles to become the Ultraman of a new generation continues!