A.D. 2087 - the United Lunar Empire Giganos wages war on the Earth Federation Military to take control of the planet and establish a "rebirth" of the human race. During an invasion of a colony by Giganos' forces, three civilian men stumble upon a trio of top-secret Metal Armor units called "Dragonars" and pilot them to combat the enemy forces.

One night after leaving a club where he was playing trumpet, Ryou Takagi is jumped by a motorcycle gang. The scuffle spills out into the streets and causes a traffic accident. Because of this, Ryou is arrested and forced to do time. Upon his release, he has developed into a skilled boxer but trouble continues to find him.

Mihira Sanpei talks with a Tohou accent and is a down-to-earth boy with a cheerful and optimistic personality. However, when it comes to fishing, he becomes very serious and is a youth who enjoys fishing more than anything else. The village where he lives in is a natural environment which provides different kinds of fishing challenges. Despite his lack of experience, Sanpei has a first-rate sense with regards to fishing and decides to maxmise his potential by entering into different fishing contests. As he faces various challenges, he learns to solve difficult problems and learn from his mistakes to the extent that he is able to fish anything out of the waters. Along the way, he encounters all kinds of rivals and companions who increase his experience points and help him in his growth. (Source: ANN)

One sunny day invaders came from space. They weren't little green men or funny girls wearing school uniforms, though. They were ugly robots which defeated the UN forces in seconds. After that the invaders (known as "eyeballs") roamed around and observed human society. In fact, they were peaceful unless attacked. They were polite and followed all the traffic laws, too. Still, they were aliens and the people of Earth wanted them to go home. The Kitanohashi High School Magic Club took it on themselves to defeat these foul robots and free the world. (Source: ANN)