A remnant soul of a demon guided a special soldier who stumbled into this world to begin his journey of cultivating immortality. With the arrangements made by the demon saint, he gradually found himself on a path of conflict against the immortal emperor. Enduring numerous trials and tribulations, during a critical moment between life and death, he came to the realization that the way of heaven was insufficient. Facing various challenges and rewards throughout his journey, he ultimately triumphed over the Emperor of Heaven and the Holy Lord before returning home.