A hundred years ago, a mysterious meteorite crashed into Earth, triggering the awakening of a hidden alien civilization deep beneath the surface. What followed was a devastating invasion as these subterranean creatures emerged from underground and launched a war against humanity.In this dangerous world, Chen Mobai unexpectedly awakens a rare superpower known as “Day and Night Duality.” But his ability comes with a strange price. During the day, Chen Mobai is physically weak and vulnerable, forcing him to survive through quick thinking, strategy, and sheer determination.Everything changes when night arrives. As darkness covers the world, Chen Mobai transforms into the terrifying King of the Night, gaining extraordinary strength and abilities that make him a formidable force on the battlefield.With humanity struggling against the relentless underground invasion, Chen Mobai joins forces with other awakened superhumans and a highly advanced military force. Together, they fight their way through brutal battles, uncover the secrets behind the meteorite, and defend the surface world from an enemy that has been waiting beneath their feet for a century.