The invasion of the biomechanical alien race "The Screamers" has pushed earth civilization to the brink of destruction. The last fortress of mankind is crumbling. Lin Jue, a former special soldier, receives a final mission related to the survival of mankind - to protect the genius scientist Cheng tide. Cheng tide masters a crazy and desperate plan: "Symbiotic Resonance", a theory that aims to completely fuse two highly compatible humans from the neurological to the physical level to create super soldiers. When humanity's last stronghold was breached, Lin Jue and Cheng tide were forced to launch this dangerous experiment that had never been tested. They merged into one and became a "fusion", becoming the last and only hope of human civilization. This new existence must learn to control unparalleled power in the collision and cooperation of the two souls, and wield a counterattack blade against the invaders who tear the sky apart.
