Seventeen-year-old Gu Yunzhi meets seventeen-year-old Qi Heng. They should have had nothing to do with each other, but Qi Heng's kindheartedness brings them together. They grow close, only to become the unspoken eighteenth birthday in each other's lives.
Gu Yunzhi: "Qi Heng, let's be together. I mean it."
Qi Heng: "Zhizhi, the wish you made when you were ten came true when you turned eighteen."
Theme: Study hard.
