When two brothers with clashing personalities obtain incredible powers, they focus on overcoming their differences to defend Earth as a superhero team.

Families are always around us and hence they are likely to be taken for granted. This is a story of brothers, revolving around the main theme of "Bond" and "Love". One day, the brothers encounter a monster and almost lose their lives in the mountain. Then, two transformation items appear there suddenly, and the brothers will throw themselves into the battle world as Ultraman...