When Xu Mingxuan just started his freshman year, he met Shen Yungning, the campus belle of Tongzhou University, on a high-speed train. Ever since then, the two bumped into each other repeatedly, and unexpectedly ended up becoming flatmates. In the following days, he would always appear when she needed him. And she would always tenderly soothe his heart when he was tired, so the two of them, who were already running towards each other, finally came together.