In the year 2147 of the interstellar calendar, humans over-exploited the rift engines of the alien civilization "Star Abyss Clan", causing the "Star Eclipse Rift" that swallowed matter to go out of control. Lin Yanzhou, the former commander of the Federal Rift Defense Agency (a mechanical cyborg) and Gu Xingyao (a Rift Resonator), a hybrid from the Star Abyss tribe, broke up and reunited due to the "Black Hole" organization's raid five years ago - the former voluntarily implanted a swarm protocol chip to protect the latter, and the latter was burdened with the fate of activating the Star Abyss key. When the Black Hole Organization attempted to use the "Swarm Protocol" to control the rift to create a star eclipse storm, the two discovered that each other's neural connection rings and mechanical cores could resonate and activate the "Twin Engines", becoming the only "Guardians of the Star Abyss" who could stabilize the turbulence of time and space. In the pursuit of the Federation and the conspiracy of the black hole, they traveled through the interstellar ruins, activated the ruins of the Star Abyss, and gradually revealed the truth about the annihilation of the Star Abyss tribe...
