Lin Chao, a university student, joins a national destiny restoration experiment to save his comatose younger sister. He travels through time to repair damaged history. First, he narrowly succeeds in wiping out the dinosaurs. Then he accidentally enters the distorted, chaotic era of Great Cang, where interference from foreign forces leaves him condemned to death—until he encounters the First Emperor, an unrivaled ruler throughout the ages. With his system-granted talents and quick thinking in moments of crisis, Lin Chao awakens the divine sword, Dao Sword, and joins forces with righteous factions to fight the tyrant Cang Jun. He foils the conspiracy and ultimately rises from obscurity to become a hero who rewrites the course of time and space.