主人公林雨翔(吴禺男)自幼天资聪颖,活泼可爱,加上其父的影响,从小就被誉为“神童”。然而这个极具才气的少年却在实践严重偏科,也因此遇上了影响他一生的老师马德宝(黄燎原),还有占据他整个情感生活的女同学苏珊(董洁)。青春年少朝气蓬勃的他们,与所有同龄人一样有着情窦初开的情怀。有意无意的接触间,爱情的萌芽逐渐开花。
在这个恋爱的季节里,充满幻想的男孩女孩能否找到那把钥匙,去打开人生的门、心灵的门、爱情的门。
The protagonist Lin Yuxiang (Wu Yunan) has been talented, lively and cute since childhood, coupled with the influence of his father, he has been known as a "prodigy" since childhood. However, this extremely talented young man was severely partial to practice, so he met the teacher who affected his life Ma Debao (Huang Liaoyuan), and Su Shan (Dong Jie), a female student who occupied his entire emotional life. They are full of vitality in their youth, and they have the same sentiment as all their peers. Between intentional and unintentional contact, the bud of love gradually blossoms.
In this love season, can boys and girls full of fantasy find the key to open the door of life, the door of soul, and the door of love.