One day, Earth was attacked by a space pirate named Orbus. His target was Planet Energy, the life force of the Earth. If several Release Points, where this energy was concentrated, were struck simultaneously, the planet would explode. During the initial assault, Takasugi Seiji fled to an old temple with his girlfriend, Kosaka Hikaru. There, he received Orin, a token from the leader of the Earth's guardians, bestowed by the Earth's conscience. Through Orin's power, his patrol car was transformed into the robot, Da Garn.