Bai Qi is betrayed by his closest friend, Jiang Yuan, who plants a heart demon within him and frames him, leading to his suppression in the Abyss of the Underworld. Before his death, the God of War Jiang Lan sends his battle soul into the abyss, helping Bai Qi break free from his seal. Seeking the truth, Bai Qi sweeps through the Underworld, conquers the Nether Realm, and fights his way into the Heavenly Realm, exposing the shocking conspiracy of the False Heavenly Dao's Ancestor, Que Yi, who uses the Three Realms as a vessel to drain the spiritual power of all living beings. His sworn brothers, Luo Fei and Jiang Yingxue, sacrifice their souls to save him. On the brink of death, Bai Qi suddenly comprehends the true meaning of Unity, slays Que Yi, and restores freedom to the Three Realms. Once brothers, now bitter enemies; the Heavenly Dao itself turns out to be a counterfeit. Bai Qi, the one who breaks free from the cage, embarks on the Great Path of Unity.