At the heart of the plot are three distinct stories separated by millennia. In the prehistoric era, a family of early humans loses their home and fights for prehistoric survival. In the present day, a modern anthropologist named Claire studies ancient human remains while navigating her own complex personal relationships. In the distant future, an astronaut named Coakley embarks on a deep space exploration mission to a new planet, only to face a deadly crisis when the ship\'s oxygen-producing flora begins to wither.
While these timelines do not directly intersect, they deeply resonate with one another. This captivating sci-fi anthology masterfully demonstrates how human fear, hope, and the choices we make consistently echo throughout humanity across eras.