Living a mundane life in a Tokyo suburb, Suzuki, a middle-aged man with dreams of fame, stumbles upon a hidden portal to an alien realm inhabited by goblins. Seizing control over these creatures, he descends into tyranny. Meanwhile, two clever students, Hajime and Mariko, encounter an enigmatic alien detective who gifts them Doteraman costumes, granting them incredible powers. Transformed into Doteraman and Doterapink, they defy the malevolent ruler, freeing the oppressed goblins. Embracing their roles as heroes, they embark on a thrilling journey of justice, brimming with excitement and joy.