改编自赵乾乾同名畅销小说，主要讲述了陈小希与江辰19年间共同成长，从青梅竹马到错失后的再次牵手的爱情故事。腹黑傲娇的天才医生，蠢萌逗比的元气少女，全剧气质俏皮幽默，通过展现陈小希倒追江辰一路上啼笑皆非的日常，记录了青春时光里最美好的心动时刻，将专属17岁少男少女之间的青涩感情呈现出来，带领观众重返好时光。Can the pure love of 17-year-olds endure through all the challenges of adulthood? Chen Xiao Xi and Jiang Chen are high school friends and neighbors who grew up together. Xiao Xi is happy-go-lucky and doesn't like to study much but she has a talent for drawing. Jiang Chen is popular for his good looks and high grades. Their friends include swimmer Wu Bo Song, who will do anything for Xiao Xi, and Xiao Xi's best friend, Lin Jing Xiao, the most beautiful girl in school. How will the realities of life shape the friendships and love of these young adults?