Shirei was talking to Miss Ochiai by phone. Shirei told Miss Ochiai to relax and enjoy her vacation. AEGIS Operators giggled to each other while listening to their conversation. Miss Ochiai wanted to come back because she would not need to watch the race for the next day. Miss Ochiai mentioned that the boyfriend (who would be racing) of her friend had changed after a business trip. Having heard of this Shirei, who was then holding a report about Invaders, became alarmed. Shirei told Miss Ochiai to stay as he would fetch her.(Episode Title)

In the Fuji Circuit (a day before the 1969 Grand Prix), a man got furious when Car # 4 overtook his Car # 1. The man was convinced that he should be number one. The furious man stopped to the mechanics and complained that there was something wrong with his transmission. Both mechanics men told him that he bought the transmission himself. The man yelled at them that his car should be number 1. His girlfriend told him to forgive the mechanics men but he only told his girlfriend to shut up. Miss Ochiai showed up and introduced Shirei (introduced as the principal) to her classmate, Mami Ryukawa (the woman) and Nishiya (the furious man). Shirei remarked that Nishiya had a well-tuned car and Nishiya proudly told him that it was number 1. Nishiya said his car drove terribly. Nishiya pointed to the yellow #4 car and said it's engine sound was good. Shirei asked Nishiya if he could really tell how good a car is by its sounds and questioned him if he heard weird sounds before. Mami recalled that Nishiya was sometimes bothered by weird sounds. Nishiya yelled at Mami to shut up.

Nishiya was infuriated with the way Shirei asked him. Mami told Nishiya that he was just nervous for the next day's race. Suddenly, Nishiya heard a weird sound and the sound seemed to lure him to his car. Mami told Nishiya that he forgot to bring his helmet but he did not notice her. Nishiya kept mumbling "kill him" until he got in the car and drove it.

Miss Ochiai was having a ride with Shirei with his Citroen DS Pallas. Miss Ochiai remarked that the car was like riding in the clouds. Shirei ordered Miss Ochiai to contact AEGIS (Miss Ochiai blushed, calmly said, "Hai", changes tone, "Ah, Hai!"). Shirei suspected that Mr. Nishiya was an Invader. Miss Ochiai would not believe it because Mami had known Nishiya since grade school. Shirei insisted Miss Ochiai to contact AEGIS. Miss Ochiai was about to call AEGIS until they detected an alien frequency. A blue car appeared and chased Shirei's Citroen. The blue GT-R almost crashed to them but Shirei's expert driving saved them. Shirei instructed Miss Ochiai to open the glove compartment. Inside the glove compartment was a gun. Shirei said it would be her first real battle. Miss Ochiai's hand was trembling as she gets hold of the gun. When Miss Ochiai looked back, the car was gone. Shirei wondered if the car gave up. In front of them, the blue GT-R jumped. Luckily, Shirei circumvents his Citroen and at least saved their lives. Miss Ochiai took a quick look at GT-R and noticed the number - number 1! While turning around, the Citroen fell off course to the cliff. Miss Ochiai screamed and Shirei instructed her not to speak and just bite her tongue. Nishiya, who had partly transformed into a robot looked down from the cliff.

Meanwhile, Shun entered the school clinic. Shun was surprised to see Ruriko instead of Miss Ochiai. Ruriko took charge of the clinic because Miss Ochiai was away with Shirei. Shun came to the clinic because he hurt himself in his gym class. Ruriko tended his wounds while Shun was telling her about Kaoru new soccer technique called Submarine Shot. Having heard of this, Ruriko got another ointment and continually poked Shun's wound. Shun complained in pain and requested for Ruriko's Gate of Life instead. Ruriko refused. ^_^

The Citroen got away but it had a flat tire. Shirei apologized to Miss Ochiai for getting her involved. Shirei admitted his fault for revealing Nishiya's identity. Shirei mentioned that Fukuoka-type Invaders have been fabricating humans. Shirei assumed that an Invader took Nishiya's place without him knowing it. Miss Ochiai pleaded Shirei to stop. Shirei avoided the topic about Nishiya and said that Invaders were multiplying secretly but surely. Shirei warned Miss Ochiai not to tell Shun and the others about it because it would too much for them. Besides, Shirei wanted to confirm it himself. Shirei recalled about Miss Ochiai's report on Invader Mode of Life £ 9, that discussed about humans who were lured by a strange voice, possibly the alien frequency.

After a while, Shirei was finally done in changing the tires. Shirei reminded Miss Ochiai to take the gun and added it was not that heavy. Shirei told Miss Ochiai that they should split up. Shirei even said if something happened to him, Miss Ochiai should assign a new commander and she should stand in position to fight. Miss Ochiai asked how he can talk like that easily. Shirei took Miss Ochiai's hand and put the gun on it. Shirei's past was revealed. Shirei narrated that he died once, well not literally.
24 years ago when Shirei was as old as Shun, he was a student at a navy. Before graduating the navy, Shirei became involved with the Jinrai Force responsible for the human bomb Ohka. Shirei could not forget the historical date: May 4, 1945. They used the Kikusui £ 5 strategy (no idea whatsoever this is) against the enemy. Shirei's superior handed him a gun and said it was not heavy. Even though Shirei claimed that he would not use the gun, his superior insisted he would need it. During the battle, their plane crashed and Shirei was the only survivor. Shirei was rescued by the enemy destroyer. He tried to shoot himself but an enemy sailor (an American) stopped him and told him to stay alive ("Be alive! Be alive!"). Shirei was given his 2nd chance and since then he promised to work for the people.
Even though some may think Shirei was a senseless man, Shirei could not just simply wait and see what would happen to their country. The sound of the GT-R was nearby. Shirei told Miss Ochiai to escape without him. Miss Ochiai refuses and said that as the private secretary to the commander, she would not leave his side. Shirei accepted Miss Ochiai's decision and they both rode Citroen. Shirei tried to start his car but it would not. The monster-turned GT-R was jumping over the bushes that it passed. Nishiya drove his GT-R rowdily and hastily. After the GT-R was just about a distance away, Shirei finally got his Citroen to start. Shirei got his car off the forest and on the road. Nishiya attacked them and it destroys the back compartment of Citroen. Shirei remembered that the Fukuoka-type Invaders recalled their memories. Shirei speeded up and Nishiya remembers Car #4 overtaking him. Nishiya yelled that he was number one and then he boosted up GT-R's speed. Shirei instructed Miss Ochiai to hold on to something. Shirei chose the right timing and the right corner. Shirei finally hit the brake. GT-R ran very fast that it falls off cliff.

Miss Ochiai crouched and looked down from the cliff. Miss Ochiai stood up then looked at Shirei. Just right below, the robot Nishiya hooked on the rocks. Nishiya reappeared right behind Miss Ochiai. Miss Ochiai turned back and pointed the gun at Nishiya. Nishiya yelled that he was number one. Miss Ochiai remembered the normal Nishiya with Mami Ryukawa. Shirei ordered Miss Ochiai to shoot but Miss Ochiai was trembling. Nishiya yelled that in the end he was still number one. When Nishiya almost glomped at Miss Ochiai, a gun shot was heard.
Miss Ochiai opened her eyes and saw a hole in the Nishiya-robot's body. The hole began to fire and explode. Miss Ochiai looked back and saw Shirei still pointing a gun at Nishiya. Nishiya screamed while burning. Nishiya disintegrated into crystal and finally disappeared. Shirei put down his gun and told Miss Ochiai to contact AEGIS because the interference wave should already be gone. Shirei said the incident should be considered as a car accident. Miss Ochiai asked what would happen to Mami who was waiting for Nishiya. Shirei answered that it was just one of the misfortunes that happened in the world.

Mami looked at the helmet while waiting for Nishiya. The phone rings, Mami answered. "What?!"