The genius robotics professor, Dr. Komyoji has created Kikaider—a humanoid robot tasked with the protection of Dr. Komyoji's son and daughter. Gifted with the conscience circuit, Kikaider is given the power to simulate real emotions that helps to distinguish between "right and wrong." Can Kikaider protect Dr. Komyoji's children and battle against the evil Dr. Gill and his army of androids? The fight against world domination lies in the hands of Kikaider. (Source: Bandai Entertainment)

The series initially begins as a darker version of the original live action tokusatsu show Jinzou Ningen Kikaida, creating and expanding many emotional conflicts within Kikaida and other characters which were not present in the original Kikaida story.