At the start of her sophomore year, the heroine falls in love with the hero at first sight, then discovers they are in the same class. She approaches him under the pretext of asking him to tutor her, hoping to spend more time together, but unexpectedly learns that he was a left-behind child and taught himself programming. A sign-up drive for the school’s innovation and technology competition is underway. He wants to enter but is too insecure to sign up, and she sees through this and encourages him.
The school organizes a charity visit to a mountain village, where they meet a left-behind child who is lonely, friendless, introverted, and sensitive, and has grown even less willing to socialize with children his age. Seeing how much the child reminds him of himself as a boy, the hero empathizes. The heroine suggests that he develop a companion robot to help left-behind children.
As they work on the project, they play with the children to gather information, and their feelings for each other grow. After entering the competition, their project advances and looks likely to win a prize. Then, suddenly, they are accused of plagiarism. The hero leaves without a word, and the heroine spares no effort in searching for him. She discovers that he left because he has a serious illness and believes he does not have long to live. He was afraid of making her sad.
The heroine stays by his side as he fights the illness, and they use videos taken while playing with the children to prove the project is their own. Later, the project wins an award and becomes a real initiative that helps left-behind children. At last, the two confess their feelings to each other.
Theme: The gentleness of youthful innovation can heal the loneliness and deprivation experienced by left-behind children. Their mutual devotion helps them overcome the wounds of their upbringing and the lowest points in their lives. Kindness and passion can withstand even the bitterest hardships fate has to offer.
