On the first day of the second year of high school, An Zhixu, who is number one in the grade, and Fu Yanxu, who is always at the bottom, become roommates due to a farce about climbing over a wall. She hates his uninhibitedness, and he makes fun of her coldness and rigidity, but she doesn't know that they are pen pals who have lost contact for seven years - he hides the tenderness of "Mr. Mole", and she forgets the softness of "Little Fox".
When the dusty maple leaf bookmarks in the library reveal the truth, the deeply buried pen pal friendship turns into an undercurrent. Fu Yanxu's secret of using zero marks on his test paper to fight against a broken family was seen through by An Zhixu, and she took him to a remote mountain village to teach. Under the kerosene lamp, the eyes of children using tree branches to calculate math problems on the soil finally awoke his self-destructive soul.
He burned all the blank test papers and rebuilt his pride in the code world;
She exposed the ghostwriter's lies and found the sincerity in the seven-year-old letters.
From the pen tip to the keyboard, from the albizia flower rain in Lantau Middle School to the ginkgo bookmarks in the mountain village school, the two teenagers repaired the scars in the misplaced reunion, using love as a boat, carrying each other to a bright place.
Purpose: The redemption of youth that breaks out of a cocoon and becomes a butterfly: using love as a boat, breaking the shackles of the original family and educational prejudice, recasting self-worth in the two-way journey, and witnessing the weeds finally turning into the sun.