Luo Zhiyi, a girl from the heart ward, is used to observing the world through astronomical telescopes. She meets transfer student Zhou Jingchuan at dusk in early autumn and discovers the scar on his right arm and the secret of treating the wound alone late at night.
Zhou Jingchuan accidentally discovered Luo Zhiyi's telescope, and the two lonely souls met on the top floor. He taught her how to play basketball and gave her a ginkgo bookmark, becoming the first ray of light that shined into each other's lives.
Concept: campus be