Twelve Stars: the Earth's Last Line of Defense

In 2088, a group of scientific research teams successfully landed on Mars. While transmitting exploration data, an even older Martian relic was accidentally exposed. The huge steel mecha, the huge head buried in the dust, and the broken battleship wreckage all tell the story of the tragic battle. This land condensed with blood demonstrates the loyalty and passion of the martyrs everywhere. It is because of them that the bright red flag can fly here.​ With memory retrieval and global live broadcast, a secret that had been sealed for twenty years gradually surfaced. It turns out that before people on Earth officially set foot on Mars, a mysterious "Tiandao Plan to Protect the Country" had already been launched, and the Twelve Sons of Loyalty were the core executors of the plan. When they set out, except for the captain, most of them were still teenagers, but they had to fight bloody battles and stand alone in the face of the threat of alien races in outer space where their motherland could not support them.​ Now, one person guards one star, their secret is about to be revealed, and the world is waiting for the hero to return. But as the live broadcast progressed, a worrying fact gradually became clear - there may not be many left in the Twelve Sons. What exactly did they experience during this interstellar journey? What are the touching stories behind those martyrs who sacrificed their lives heroically? And now, after knowing their deeds, how will the earth welcome the return of these loyal martyrs?