Nexus Inheritance

A Supreme being, fearing the end of all things, embarks on a desperate quest for ultimate power. Her journey throws the universe into chaos as nightmares from parallel worlds begin to bleed into reality. Elsewhere, a mortal is left for dead by his tormentors, but a fated encounter changes the course of his life forever. What could the journey of the weakest cultivator possibly have to do with the fate of the cosmos?