While driving alone one night, Hikaru happens to spot a flying missile shaped capsule streaking across the the sky. Momentarily confused, the man retunes home to report to his grandfather what he had just seen. Once told, Raita, Zone Great, immediately recognize what the mysterious object must have been. The Garoga Empire had moved on from their previous shattered home, Peaceland, and now were making Earth a new target. He told his grandchildren, Hikaru, Hotaru, and Akira, to be on the lookout for anything strange. The gargoyle like demons were truly deceptive and evil and most likely already had scouts placed among the human populace. Indeed he was correct. Crashing to earth, several Garoga beings crawled from out of the wreckage and made their way towards the city.

The next day, while shopping, Hotaro happened to spot one of the vile creatures in disguise. Looking like a normal policeman, the being’s webbed like hands were a dead giveaway. She relayed her information to her little brother, as Hikaru drove out to the crash site of the mysterious alien vessel. While there, however, he is attacked from behind by a Garoga agent. Meanwhile, at the same time, his sister and little brother are also both abducted by another agent, posing to be their taxi driver.

Back at home, after listening to a distress message that Hikaru taped onto the Zone Transmitter device, the rest of the Zone family receives a phone call from the Baron Garoga. The ruthless dictator tells them where his men are holding the children and that if they wish to see them alive they should come unarmed. Solemnly they agree and arrive at the abandoned warehouse where they are soon reunited with the kidnapped children. Tsukiko, the mother, begs for their lives to be spared, but her pleas fell on deaf ears. Stepping forward, the three agents take aim with their machine guns, prepared to wipe out the last survivors of Pleaceland. Fortunately for the Zone Family and Earth, the Garoga minions had no idea of the three children’s unique gifts. Uttering the words “Zone Fight Powers!”, Hikaru, Hotaru, and Akira transform into Zone Fighter, Zone Angel and Zone Junior. In their new forms, bullets prove completely ineffective. So, the three spies transform.

With frozen grins of pure malice, the inhuman creatures battled with the warriors of light. But their power proved not enough and they soon found themselves beaten back. Realizing defeat was at hand the demons combined their power and joined to form the horrifying Terro-beast, Red Spark. Laying waste to the refinery district, Zone Fighter was forced to reveal his last and most powerful form. Harnessing his power, he changed into a giant warrior, enabling him to battle with the now massive kaiju. Fighting like a true hero, the human like alien was able to dispatch the crimson titan with a single blast of his Meteor Missile Might. However this would not be the end of the Garoga attack. Sending down yet another capsule, a second monster exploded from it and parachuted down to Earth. It was the monster Jikiro, a powerful war machine. Attacking with lightening blasts, magnetism and hammer fist like strikes, Jikiro nearly exhausted the last remaining strength from the hero. Zone Angel and Zone Junior, though, interfered and summoned Smokey, a spaceship built by the Zone Family. Using it, they recharged the failing powers of Zone Fighter, thereby letting him continue the fight against the Terro-beast. Unleashing new vigor and strength, it wasn’t long before the warrior from Peaceland destroyed the Garoga monstrosity with a few volleys from his Meteor Missile Might.