In the middle of the 19th century, an era when industrial products started to be powered by steam. The protagonist Lei, who was born in a family of inventions, is a genius boy who likes to invent all sorts of incredible steam mechanical devices. Lei's grandfather and father are also inventors who are extremely keen on research, and often travel around the world for scientific research and invention exploration.
This year, the United Kingdom held the Universal Exposition. The grandfather Lloyd, who was researching and inventing in the United States, sent Ray a mysterious sealed metal ball. As a result, Ray was suddenly attacked by a group of unidentified people. Their purpose was to snatch it. Metal balls. Lei had no choice but to take the metal ball and ride on the self-propelled single-wheeled vehicle he invented on the road to escape.
In search of the truth, Lei came to the United States. Lei learned from his father Eddie that the metal ball turned out to be a metal container sealed with a magical super-high-pressure steam. This is a great invention that can change human history. It can not only drive the rapid development of human industrial civilization, but also create weapons that can destroy the entire world. The person who sent someone to snatch the steam ball was the American chaebol Simon, who tried to monopolize the invention and use it in the military to make huge profits.
When his grandfather and father finally turned against their goals because of their different ideals for science, Lei, who firmly believed that "Grandpa didn't invent this metal ball for war!" He had no choice but to start fleeing again with the steam ball alone. In the long solitude, Lei met the beautiful rich daughter Scarlett. Scarlett is a little princess who was raised by Simon. She was spoiled since she was a child, but she prefers to fall in love with Lei and voluntarily follows Lei's lonely adventure.
So-called science, is it people’s hope, or knowledge that will destroy everything and should be completely banned.
And this great invention, is it a miracle that can bring happiness to the world or the invention of a demon that can bring disaster.
Believing that the power of science is the driving force for human happiness, Lei finally used this steam ball to ascend into space, get rid of the chase of the greedy Simon, become a veritable "steam boy", and thus began his space adventure.
