Hinkle is a messenger from the planet Muzanda who crashes to Earth in a meteor-like descent near Mt. Fuji. His mission is to warn humanity of a grave threat: invaders from his own world, led by King Bull, who are stealing Earth's vital Gaia Energy. Accompanied by his robotic companion, a robot horse named Roboni, Hinkle forms an alliance with a local farm boy, Kazuma Harukaze, and his sister Sakura. His arrival sparks the conflict against the Muzandan forces and sets in motion the events that lead to the rise of the hero Devander in Earth's defense. Hinkle fights alongside the story's protagonists, known as the "Good Guys."