In the second semester of her second year of high school, Shen Xingruo (played by Xu Ruohan) transferred back to Xingcheng Mingli Middle School and stayed at the home of her father's friend Lu Shan. Shen Xingruo and Lu Shan's son Lu Xingyan (played by Li Yunrui) lived under the same roof and attended the same class. In the one and a half years of getting along, the two went from disliking each other at the beginning to gradually falling in love... Adapted from the original novel "Strawberry Mark" by More Than Vegetables.