The story starts at Bulia, a small town north of Mitelia, which is a planet that just finished its industrial revolution and is distant to Earth about one hundred light-years away. An excellent engineer, Chris meets Kerman, a captain of a spaceship, who invites Chris to help investigate an event for his colleague's daughter. During the travel to Ponlenia, they meet the extremely dangerous black hole incident. They struggle with the event and eventually arrive at Ponlenia. From an industrial revolution planet to a five-thousand-year-old advanced civilization, Chris gets a great shock, but he and his friends Frank and Christopher, eventually with their hard work and studying, they gradually become important members in the space center. Meanwhile, the real important event happens when Mike and Sam's first Earth expedition team entered this sphere to build the Earth's first colony, Milirina. As the human beings' first ideal immigrating target planet, Milirina showed the people from Earth an amazing scene. Also they help the L-P star system get rid of the threat of the black hole. The whole story is thrilling and romantic, especially in the final part when Mike's team at last eliminates the heaviest natural disaster. Everyone will get a clear image that the future of human beings will be like the story--bright, winding, and happy.