After Chu Chu stayed in Wugao Mountain in the East for four hundred years, one day, he suddenly discovered that the golden lock that carried the mystery of his and his sister's life experience was emitting a dazzling light. Chu Chu, who thought her sister had been poisoned four hundred years ago, once again ignited hope, and secretly ran out of Wugao Mountain to find her sister without telling Xihe, the sun god who had saved her life. On the way, she met a mysterious man named "Song Zhi". By chance, she experienced many bizarre and interesting things with Song Zhi on the way to find her sister...,,,,,,,