At the centenary ceremony of the Xuanchen Sect, Mu Wanli, the eldest sister of the inner sect, was framed by her fellow sect, the Ling Mansion was abolished, and she became a traitor to the sect. When she was on the verge of death, she bound to the villain development system and knew that she was actually cannon fodder in the Tiandao script, and that her younger brother Mu Yeshen would die tragically from a random sword to save her. In order to overturn his destiny, Mu Wanli escaped into the dangerous demonic abyss, used demonic energy to reshape the demonic core, and embarked on the opposite path.
Mu Yeshen, who has a black lotus heart hidden under his gentle appearance, secretly burned the Immortal Sect's magical artifact map to protect his sister, escaped from the Xuanchen Sect, and reunited with his sister in the Demon Abyss. The two siblings work together to kill the powerful enemies of the Blood Shadow Alliance, decipher the secrets of ancient ruins, and even accidentally break into the demon world, facing the threats of bone-corroding miasma and powerful monsters.
While the forces of the Immortal Sect's pursuers, the Demon Alliance's overlords, and the Demon Realm's city lords are surrounding them, a contest surrounding the inheritance of the reverse path and the hegemony of Heaven's Way is fiercely unfolding between the Canglan Immortal Realm and the Demon Realm. This pair of rebellious siblings will eventually use the magic energy and the sound of the piano as blades to break the shackles of heaven and set off a storm that sweeps the three realms.
