In the era of interstellar colonization, humankind's living space is constantly being encroached upon by terrifying alien creatures called "Star-eating Zerg".
Lin Yuanhang, a top student at the Military Academy, has a low genetic score and is judged to be stuck with logistics throughout his life, unable to become a true mecha warrior.
In an accident, he strayed into an ancient super battleship "Apocalypse" that was forgotten in the garbage star belt, and unexpectedly became the sole heir of this battleship.
The intelligent core of the battleship, "Zero," possesses technology far beyond that of human civilization.
From then on, a logistics soldier who was supposed to be unknown, driving the most ragged training mecha, was able to perform the most incredible extreme operations.
Modify mechas, crack military encryption, predict battlefield situations...
When the Zerg army that covers the sky comes again, everyone falls into despair. Lin Yuanhang will drive his "rag" and become the only light that tears through the darkness.
He, and his Apocalypse, will be the last hope of human civilization.