"That love letter that never arrived is the entire youth we missed."
In high school, Sang Wan was a quiet girl in the class. She poured all her unexpressed emotions into a love letter, but on the eve of transferring school, she watched it disappear into Zheng Yi'an's desk, like a stone sinking into the sea. She didn't know that the letter that carried all her courage was quietly taken away by Sun Huanqing, who also had a crush on Zheng Yi'an, and became an eternal secret.
Three years later, Sang Wan's substitute teaching attracted the attention of Zheng Yi'an, who had become a famous figure on campus. When they met Sang Wan again, it was like being struck by lightning. What shocked her even more was that Zheng Yi'an's eyes were locked directly on her - he remembered her and had even been looking for her.
When Zheng Yi'an broke into her life with an attitude that could not be refused, the wall Sang Wan built began to shake. He remembered that she liked lemon-flavored candies, that she always looked out the window in a daze on rainy days, and even remembered that she wore a blue dress on the day she transferred to another school. These details are like a key, slowly opening Sang Wan's long-closed heart.
However, when the two finally wanted to break through the window paper, Sun Huanqing suddenly appeared and revealed the truth of the year. The stolen letter, the deliberately created misunderstandings, and Zheng Yi'an's continuous search over the past three years pushed Sang Wan into an emotional whirlpool. Faced with Zheng Yi'an's passionate feelings and Sun Huanqing's hostile provocation, Sang Wan must decide: Should she believe in love again, or live with the regret of the unfulfilled love letter forever?
Mission: Youth leaves no regrets