Wen Wen (played by Yang Yuhan), a girl who had been buried for three days in the earthquake, was rescued. After being rescued, she always believed that her father was still traveling in the center of the earth. She traveled to every place where a broad bean could be drawn to save her father who could tell fairy tales. Wenwen's mother (Gong Beibi) took her into a new home with her grandmother (Zhang Zhihua), father (Jin Liang) and brother (Chen Xinyu). However, Wenwen was faced with an overwhelming love. Under such love, the conflicts between mother-in-law and daughter-in-law, son and father, husband and wife, stepmother and son, mother and daughter were intertwined and impacted. Wenwen's mother was finally exhausted. Although she wanted to understand and help her daughter desperately, such a parent-child relationship still ended in an elusive failure. Wenwen chose to lock herself in an imaginary world completely composed of her father's fairy tale "Underground Root Mother". She still traveled through the center of the earth in her paintings to escape the fact of her father's death. The family conflicts were finally intensified by her grandmother's prayers to God, and Wenwen's mother took her away from home. At this time, the little brother bravely took action. He first participated in Wenwen's adventure to find her mother and rescue her father. He also took the whole family to experience a strange and bizarre, but also exciting and delightful "breaking out of the cocoon and becoming a butterfly" leap to the center of the earth with Wenwen...