Amid the stacks of senior-year exam papers, Lin Xiaoman and Jiang Yi share a secret. He's the top student who helps her reach A Brief History of the Evolution of the Universe, the desk mate who draws smiley faces in the margins, the boy who says, "After the exams, I'll take you to see the Milky Way."
From their first meeting in the library to standing side by side beneath an umbrella, from the paths they sketch on star charts to the cities that quietly draw closer on their college applications, the two teenagers hide their budding feelings in the gaps between countdowns. It turns out the brightest star isn't in the sky, but in the light shining in his eyes when he looks at her.