Cheng Xiaomao

In a small town, twelve mysterious letters and a 35-year wait intertwine to shape the lives and loves of a close-knit group of friends. Yu Nian and Shen Cheng’s world is thrown into turmoil when their parents vanish, followed by cryptic messages arriving from another time. Driven to uncover the truth, they plunge into a complex puzzle, navigating dual timelines and unraveling the secrets hidden within the letters that could explain their disappearance.

Seventeen-year-old Cheng Miaomiao and sixteen-year-old Cheng Yayao were born in the Lin Qi Oil Field, where their family has worked for three generations. In the late 1990s, the family relocates from the Northwest to the coastal town of Heping, where they must navigate their new environment and face challenges that foster personal growth.

A high school student time travels 20 years earlier to meet her mother in her younger days. Li Jinbu and her mom have always leaned on each other. A magical journey brings Li Jinbu 20 years earlier where she meets her mother Li Qingtong and they become fast friends. Coming from different generations and having different personalities, they run into funny situations. Through their time together, Li Jinbu gets to know her mother's forbearance and bravery.