Two giant monsters Zazahn, and Takkong rise from the sea fighting eachother destroying each other several city blocks in Tokyo. MAT (Monster Attack Team) is called into action to quell the kaiju assault. During the attack, A boy named Jiro Sakata ran to the car company to tell his older siblings that monsters were attacking, & ran off to them, with a race car driver Hideki Goh ran off to chase after him. Jiro went through the police to get them, and Goh got him to safety. Zazahn died with Takkong remaining. MAT landed to ground when a mother told the team that her son Hiroshi went to the top of the building to release the birds out of their cages. Oka was about to go in, but Goh went to the building to help Hiroshi release the birds, and got back down stairs until they noticed a dog chained in, so Goh went back in, & released the dog. Takkong crushed the building and collapsed on Go covering the dog, and Hiroshi. Then a light flashed with Takkong retreating back into the ocean.Hiroshi went to get help until Goh fainted.The doctors took him to the hospital for treatment. Aki Sakata Jiro's older sister, MAT, & Hiroshi, & his mother hoping the hospital.They but a mask on him connected to a chamber of water to know he's breathing, and gave him a needle. Ken Sakata the oldest in the family arrived to tell Goh that the Race car the Shooting Star was finished. The buddies in the chamber stopped witch mean he died. The Sakata siblings went in the room with the Shooting Star. They put flowers, a photo, & a race car toy in, & Ken poured oil on the car, & burned it to say farewell. Back at the hospital a light appeared revealing the new hero Ultraman who was impressed of Goh's courageous act that he saved a dog, and a boy if it cost his life. He merged inside Goh's body, & he was revived seeing that he was in the hospital,even surpising a nurse. MAT got a call from the hospital to hear that Goh was back to life. Goh returned to the Car Company seeing that the Shooting Star was burned for his tribute of his heaven. Goh went to Ken's office to tell him that they should Make the Shooting Star 2, but Ken refused and for his heroism, Captain Kato offers him a job as a member of the MAT force. Goh suddenly heard a voice far away,& went to the car, and left without a word initially unaware of the powers he possesses. Kato got a contact from Oka that a third monster appeared in Asagiri Volcano attacking a village. MAT engage the monster and took the people to safety. Meanwhile a Girl noticed her Grandfather trapped under, & couldn't get him out, until Goh arrived to save him, & lifted the metal off of him. Suddenly a light was seen & Goh transformed into Ultraman to battle the fire-breathing beast. He finished him off with his Specurim Ray, and was defeated. Morning came, & MAT members were having a picnic, & the boys were ordered by Oka to wash their hands in the river. They noticed Goh laying, & he woke up, & was presented by Kato as a new member of the team, with team introduced themselves, & went to have their picnic with Goh invited, until Goh heard the voice of the hero who introduced his name as Ultraman, & told Goh to keep it a secret.

While going through the various MAT training courses, Hideki Goh aces them all garnering perfect scores every time. When the monster Takkong surfaces again sinking a tanker vessel, Goh and other MAT members plan to eradicate the beast with torpedoes. During the undersea attack, Goh gets trigger happy and nearly gets him and Minami killed. With Minami unconscious, Goh tries to change to Ultraman, but fails to do so. The monster retreats and Goh is released from MAT duty. He returns to his friend Sakata so as to build his specialized race car, Ryuusei #2; but he doesn't want to work with him, either. Meanwhile, Takkong attacks an oil refinery trapping Minami below ground leaving Captain Kato and his crew helpless to get to him and workers trapped below. Goh then comes to save the people who are stuck in the oil refinery Goh only saved one then he went back. This time it was on fire. Goh beacme Ultraman Jack and killed Takkong with the specium beam.

Two young college students die while scaling a Misty Mountain, a legendary summit where monsters are said to dwell. Meanwhile, Goh and Ueno are out on patrol and Goh feels the presence of a creature nearby. Back at headquarters, none of the other MAT members believe him, but Captain Kato thinks there might be something to the legend. Without informing his team, Kato sets out on foot to find evidence. He finds it in the form of a gigantic monster, and ends up trapped in a cave. Having seemingly disappeared, and with no one knowing of his whereabouts, Goh heads for Misty Mountain to find the Captain. Minami and Goh goes with the MAT Gyro but Goh uses the parachute to get down disobeying minami. When Goh gets down there he takes a sleep. The next day Goh sets out to look for Captain Kato. Goh finds Kato then the monsters Detton and Sadola show up! Kato escapes promising Goh that he would find help. Goh becomes Ultraman and fights off the monster. The two monsters were mighty for Ultraman he was so close to death. Then he used the Specium ray on Detton and uses the Ultra slash to kill Sadora. In the end MAT went to look for Goh but they found both him and Kato.

MAT receives word of a monster sighting, so they disembark aboard the Arrows to fight it. Goh's ship is taken down by the four-legged, horned monster and immediately engages in battle with it as U-Jack. Proving to be a formidable opponent, Ultraman ultimately loses the fight. His color timer expires and he disappears. As a result, Goh ends up in the hospital with numerous injuries. While Goh is out of commission, the other MAT members believe the beast thrives on atomic power. Goh's friend Sakata helps him train to strengthen his injured leg so that he can have a return match with the monster, Kingsaurus III.

Three boys just out of school run across an unusual rock-like shell that falls off a truck at a construction site. Naturally they believe it to be some sort of fossilized monster egg (from 'the Jurassic Era', as one kid puts it). Shortly thereafter a burrowing creature emerges from the side of a mountain near the building site. MAT is on the scene but fails to obliterate the beast with bombs after Goh sees a little girl on the ground nearby. This refusal to follow orders gets Goh placed under house arrest for three days. Meanwhile, a second creature appears, and a battle ensues between both monsters and Ultraman.

Continuing from the previous episode, Ultraman briefly battles Gudon and Twin Tail before he is forced out of the fight after his color timer indicator expires. Thankfully, the two creatures -- one the natural predator of the other -- begin fighting one another, and end up taking their differences out to sea. The trapped civilians are rescued, but Aki is seriously injured. Goh, angering his teammates once more, decides to stay at her side till she's well again. Meanwhile Gudon and Twin Tail surface once more and Tokyo is ordered to be evacuated.

Goh, Jiro, Aki, and Ken are all on a mountain excursion. While enjoying the day, Jiro takes a photograph of Goh and his girlfriend in the top of a precipice. As they pose, Goh's super hearing picks up a shrill sound that nobody else hears. Later, Aki has the pictures developed and to her surprise, some sort of monster has photo bombed their picture without them knowing it. MAT investigates the location and comes up with nothing except scratch marks on some rocks by the river. They think that little Jiro has somehow doctored the photo as a prank. When the monster does reveal itself, MAT members discover it's a rock-like chameleon beast, assimilating with its surroundings. They devise the 'Rainbow Plan', an air and ground maneuver where the Monster Attack Team will pellet the thing with a myriad amount of colors so that the monster will remain visible. Goh Transformed into Ultraman & the monster was defeated.

A new monster surfaces in Hell Valley, and despite being a seemingly harmless creature, MAT must kill it anyways. Using Kishida's new X Bomb, Goh is sent to do the job. Narrowly missing the monsters ray attack, Goh fires, but the bomb doesn't go off. Upon reviewing the Arrow's on board flight recorder, Goh set the bomb as a 10 hour timed blast instead of on-target detonation. Worried the creature may surface in a densely populated area before the bomb explodes, MAT must find the burrowing beast before the ten hours is up. Tensions are alleviated when it appears the creature is leaving the Tokyo area. But when it is learned the monster is heading towards a chemical dynamite factory in the Aoki Highlands, MAT rushes there to avert another potential disaster.

When one of MAT's officers crashed on Dangar's island while delivering a Monster Sonar, MAT came to rescue their friend, but had accidentally disturbed Dangar's sleep while he was in a cave. Awakened, Dangar proceeded to attack MAT and shrug off all their assaults. Hideki Go began attacking, but his craft ran out of fuel and crashed. As Dangar closed in on the crash, Goh was transformed into Ultraman Jack to battle Dangar instead. The two fought a lengthy battle until volcanic eruptions surrounded them. Jack finally managed to tear Dangar’s dreadlocks off and threw him to the ground before firing the Specium Ray into Dangar’s head, killing him.

An ancient skeletal sauropod dinosaur, Stegon was in suspended animation beneath the ground of Japan. A construction crew managed to awaken Stegon. After spewing small amount of acid on one of the workers Stegon arose from one of the hills. MAT was quick to respond to the scene, but their attacks did little beyond annoying Stegon. Goh turned into Ultraman Jack and began to tackle the skeletal sauropod. While try as the ancient reptile did Stegon was of little match for Jack in hand to hand combat. Before Jack could finish Stegon off some near by children were yelling out to him not to kill Stegon. Jack simply used his paralysis beam, lifted Stegon, and turned his body into a constellation of stars just like the original Ultraman did with Gavadon four years earlier. The children were happy and MAT then left.

Mognezun was a monster who had been feeding on the Yellow Gas (a real life world war II weapon) dumped by Japan's Army, giving the monster his poisonous gas powers. Mognezun used his gases to attack trespassers who neared his territory before MAT could react or arrive. After taking out one of MAT's members, the rest of MAT tried to take care of the situation, at first they seemed to get the advantage by placing a giant muzzle over Mognezun’s dangerous mouth, but Mognezun eventually pried it off and sprayed his gas at Goh, luckily Ultraman Jack appeared and the two fought. While Ultraman tried to fight the monster, Mognezun used his poisonous spikes to paralyze Jack and started poisoning Jack with his gas. MAT quickly returned with a new weapon, a gas machine that exhaled a white gassy substance that made Mognezun's poison flammable. Jack proceeded with firing the Specium Ray and igniting the gas. With Mognezun's gas effect nullified, Ultraman Jack was able to regain control of the fight and ultimately struck Mognezun in the head with his Meteor Kick, causing Mognezun to keel over and die.

Shugaron was once a peaceful monster that lived in the Shirakami Mountains, however it greatly loathed the sounds of vehicles and after construction was done to allow traffic into the hills, the sound of vehicles disturbed the monster into becoming vicious and brutal. His wrath was first felt when he was awoken by a bike gang who were looking for trouble, and by MAT's training, the bike gang became victims of Shugaron’s wrath. Shugaron's wrath continued into the night by destroying the bridge that connected to the land to prevent the noise from entering his home. Another thing that annoyed Shugaron was the amount of Sulphur that coated the valley of where an artist and his family once lived. Now it's only inhabitant was the deceased artist's daughter, whom was protected by Shugaron, who was the her father's spirit. MAT arrived by force through jets and attacked Shugaron as a threat. During the battle, Shugaron’s right eye was blown up causing the monster to rampage wildly with no sense of control, wandering into the sulphur valley and destroying the his home and killing the girl as well. Goh then transformed in Ultraman Jack and the two began to battle one another. It seemed Shugaron had the upper hand, hitting Jack with his heat ray, but Jack managed to hold his own hurling Shugaron up into the air and back down. Finally Jack ran forward just as the monster was getting back up and after one swift blow to the gut, Shugaron fell forward, dead.

To conquer the earth, an alien from Planet Nackle studies Ultraman's Abilities, & tries to find a weakness of him all to defeat him for good.

Lost in the Battle, Ultraman was captured, & taken to Planet Nackle to be executed to death, Meanwhile on Earth MAT are under Alien Nackle's control all except for Oka. What will become of them, & the Earth.

Jiro and Rumiko are kidnapped by an alien. Ultraman and MAT must find a way to rescue them, but the infamous Zetton has arrived on earth.