In a time when our lives are controlled by others, how do we break through limitations? Let us use our lives to explore; in a cruel world where the total life span of human beings is limited to 10 billion years, war has become a sickle for rulers to harvest life and extend eternal life. Lin En, a mechanical repairman, was forced to step into the bloody battlefield and witnessed the lives of his comrades disappearing like numbers. After being defeated and captured, he fell into the "hanging cage" - a prison that treated prisoners as "living fuel" and extracted them with precision. The guidance of a mysterious compass and the shadow of a dying researcher revealed the truth behind the "source of life" in the Tower of Eternity that devours all living beings. Under inhuman oppression, Linn controlled the steel behemoth "Gravedigger" that resonated with the compass, detonating the core with a desperate will to fuse the lifeblood of this hell. After escaping, he stood on the desolate wasteland, with his broken ribs and blood-stained compass as his only remaining weapons. In the distance, the light of the Aion Tower is still cold. It is not only a symbol of rule, but also the ultimate cage that imprisons the essence of life. Lin En's journey begins with the collapse of the cage and points to the final battle that will burn away the eternal darkness.
