When the ancient divine beast Vermilion Bird undergoes its heavenly tribulation, it is ambushed by the Immortal Realm and falls into the Demon Realm, transforming into a little yellow chick with no spiritual power. The Demon Lord, Mo Cangyuan, finds it and takes it in as his personal disciple. From then on, this fluffy little 'useless chicken' embarks on a journey to turn its fate around—swallowing heavenly lightning as a nourishing tonic, discovering weaknesses in immortal formations, and persuading enemy generals to switch sides. While fiercely protecting her Demon Lord boss, she struggles to reclaim the source of her bloodline amid attacks from both the divine and demonic realms. As her little tuft of feathers gradually grows, she begins to uncover a conspiracy that has been brewing for ten thousand years. And the ultimate trial that will determine the fate of both realms has only just begun.