In a land of chaos, the souls of two brothers transmigrated. One was conceived as Pangu, and the other as Kunpeng. From then on, one man, one bird, one fish, and one axe could split mountains and rivers below and shatter stars above. One swing of the axe opened the heavens; another created the earth. They would be invincible in the Primordial Universe, with the Heavenly Dao itself trading one for one.