In the near future, interdimensional portals known as "voids" unleash alien monsters on Earth. To counter this disaster, scientists create "Red Eye," bioengineered warriors fusing human with alien DNA. Playing as Rin, a newly recruited "Red Eye" operative, embark on missions to repel the void's invasion. Traverse from contaminated laboratories to toxic sewers, navigating a world altered by chaos. Can Rin save humanity from the void's destruction? Enter a dark, unpredictable realm where alien creatures lurk in the shadows.​