Beneath the magnolia trees at Jiangcheng No. 1 High School, Qi Huan has an unexpected encounter with Chen Rang, a transfer student. From quietly competing in the gifted class to becoming close and comfortable deskmates, from walking together in the rain to promising to attend A University together, their young affection blossoms as they strive side by side. But family upheaval leads Chen Rang to give up on the college entrance exam, and the two set off on different paths in life. Years later, they meet again. Though they cannot stay together, the youth they spent lighting the way for each other settles into the most precious memory in both their lives.
