Lin Yi, a freshman at the Galaxy Mecha Academy, brought system assistance to deeply study the art of war and mecha control. From simulated battles, he understood the methods of offense and defense, to his first experience in actual mecha combat, which amazed his classmates, and gradually grew into the backbone of the federal border guard. He dismantled and modified old mechas, integrated innovative tactics with alien secrets, led his team to win the cross-region league, and took the new mechas to the Blackstone Star Territory to defend the border.
Faced with the plunder of star thieves and the collusion of foreign forces to invade, Lin Yi used his wits to set up an ambush to capture the leader of the thieves. With the power of his new mecha, he defeated the enemy's formation. He was gradually promoted from second lieutenant to federal major general, commanding thousands of ships to build a strong defense line for the galaxy. He and Su Wan developed a secret love after studying together as classmates, and finally got married after being tempered by the flames of war. The two worked together to deepen defense and innovate mecha technology to protect the federal territory from war for a hundred years.
