Linebarrels of Iron tells the story of a young boy, who moves all the generation, not only today's young but also the people who were once boys and girls, with sympathy.
One day, the 14 years old boy, who cannot do anything while seeking for the justice, met a girl and got an overwhelming power; a gigantic humanoid robot. The extraordinary power that he obtained puts him and everything around him on a roller-coaster ride.
During his adventure, the boy meets new friends, bids farewell to the old ones, has considerable responsibilities and is forced to confront the world around him, and then he starts to learn what the life offers.