Cheng Nian, a sunny girl who has just learned she has stomach cancer, considers ending her life. Then a boy appears, like a ray of light, and pulls her back from the edge. When they meet again, they become deskmates, but neither knows who the other is. As they spend every day together, Xu Qinghe gradually falls for Cheng Nian. When she's bullied, he does everything he can to avenge her. On the first New Year after they meet, they confess their feelings and become a couple. They think they'll be happy together for a long time, but Xu Qinghe's family arranges for him to study abroad. He promises, "When I come back, I'll marry you." But Cheng Nian's illness suddenly worsens, and she doesn't have much time left. Meanwhile, Xu Qinghe is still planning how to propose to her when he returns home.
"I hope you remember me, and remember how bright I was that year."
Theme: Being in love doesn't always mean you'll be happy.
