The Cosmic Roots follows astrobotanist Andrew Garfield and his crew as they venture deep into the colossal Cosmic Tree, a living structure that sustains galaxies through vast dark matter "vascular" networks. When a deadly cosmic infection begins severing their home galaxy from the Tree, Andrew must use botanical principles to navigate hazardous conduits, overcome impossible obstacles, and create a stabilizing solution before the entire galaxy withers into oblivion. Blending hard science fiction with cosmic biology, the story explores survival, discovery, and the extraordinary idea that the universe itself is a living organism.