The sun is being wildly exploited and plundered by alien civilizations, and the earth's time is running out.
Human manned spaceships cannot fly to the sun, nuclear fusion engine mechas cannot enter stars to fight, plasma cannons cannot destroy enemy ships, and high-energy particle shields cannot stop enemy troops.
How can humans defend their homeland in the face of powerful enemies whose technology far exceeds their own? How to protect your own star?
How will the young boy with explosive combat power and his mechanical partner help the human army turn the tide?
