A man named Shouichi Tsugami, who has lost his memories, transforms into the superhuman Agito when near the "Unknown," a race of powerful monsters causing murders in Tokyo. The police deploy the G3 powersuit to combat the monsters, but Agito and G3 are unsure whether to work together or fight each other. As more mysteries unfold, including the appearance of Kamen Rider Gills, who seeks answers about his father's suicide, the true
