Lin Chen, a low-ranking servant, and his younger sister Lin Yue'er, who possesses a naturally gifted Dao constitution, suffer constant bullying at the Qingyun Sect. Lin Chen is ambushed by the genius Zhao Hao and falls into a valley, where, on the brink of death, he awakens the Eternal Burial-Heaven Tower left behind by his mother and obtains the inheritance of the Sword Demon, beginning his powerful comeback. To protect his sister, he sweeps through his sect's enemies. Forced to flee, he ventures across the commandery and explores ancient secret realms, repeatedly defeating forces seeking to seize their treasures. The siblings eventually set foot in the Immortal Realm and wage war in the Divine Realm, facing repeated encirclement by immortals and gods before ultimately confronting the Heavenly Dao, which governs all things. Lin Chen comprehends the true meaning of becoming one with the tower, defies the Heavenly Dao, and breaks free from his destiny. With a single tower, he suppresses countless realms and devotes his life to protecting his sister's peace, becoming the supreme Tower Master revered throughout the heavens.