In a street that was to be named "Unit Blue" in the near future, there is a town named "Night Town". A town engulfed in darkness of the night due to a lack of electricity. A young man there, Sanada Hajiki works part time in a transport business known as Hachisuka Transporation.
One day, Hajiki gets in touch with a client who wanted him to transport a mysterious material known as "GAD" for a high price. When the "GAD" ends up as scrap, it takes the form of a giant humanoid machine known as iron man "Lightning".
From then on, all kinds of people who also owned an iron man appeared before Hajiki. Kanata - an outlaw who used iron man "Zero" to destroy, Aiko - an upperclass young lady who searches for friends with iron man "Messerschmitt", and Takumi - a young man who works for justice with his iron man "Thunder Bolt".
Even though Hajiki is also a iron man user himself now, his thoughts differ... Those who are always seeking for danger, those who want to meet friends and those who fight for justice. As Hajiki is troubled over such differences, he must fight alongside his own iron man against other similar humanoid mechas.
Why did "GAD" and iron men appear before them? The gears of fate for the young men who posess an iron man has begun to work...
Note:
The real episode 6 ("The Five Masks") wasn't aired in the first run. The correct order was restored in all subsequent airings on other channels and on the DVD release.
Categories
Action
Action anime usually involve a fairly straightforward story of good guys versus bad guys, where most disputes are resolved by using physical force. It often contains a lot of shooting, explosions and fighting.
Mecha
Mecha in Japanese basically means mechanical things; everything from an electric whisk or a car to a spaceship or a robot. Here however we limit it to the more exotic things usually referred to as mecha anime: robots, whether controlled by a human or not, and their ilk.
SciFi
Science fiction stories usually focus on how situations could be different in the future when we are more technologically advanced; due to either our own achievements or having met with other civilizations whom we have learned from.
Seinen
A subset of anime or manga that is generally targeted at a 18 - 25 year old male audience, but the audience can be much older with some manga aimed at businessmen well into their 40s.