Four-year-old Ji Niannian is a born talisman sage, her background hiding a shocking secret. Because the Three Realms are about to descend into chaos, her master Gu Yunfeng tricks Ji Niannian into descending the mountain under the guise of delivering a message to her senior brother, going alone to face the calamity of the Three Realms. Along the way, Ji Niannian stirs up chaos and acts cutely adorable, causing demons and ghosts to flee in every direction wherever she goes. Amidst her laughter and mischief along the way, she gradually uncovers the hidden secrets of her identity.