In this parallel universe, just like the human body, the white blood cells in the universe are divided into red blood cells and combined with each other. Until one day, the white blood cells in the universe are extremely diffuse and unbalanced. They are called extremists. , And also because of the intervention of white red blood cells, some organic and inorganic substances in the earth mutated, and they became larger and more brutal. Until now, we have a unified name for them called monsters, but there is another kind of creature that has abandoned the brutality of monsters and has its own personality. They are called giants. Until today in 2000, the world has set a name for this giant called Ultraman.