青春是一場大雨。即使感冒了，還盼望回頭再淋它一次。 柯騰的一群好友，為了共同喜歡的沈佳宜，不約而同從精誠中學國中部直升到高中部，繼續未完的戀愛戰鬥。 某天柯騰因過度惡作劇被導師處罰，坐到好學生沈佳宜前面，由她代為監視。起先兩人彼此抗拒，但柯騰漸漸喜歡上逼他用功讀書的沈佳宜，沈佳宜也受到柯騰帶來的迥異價值觀深深地衝擊，柯騰展開了追求，沈佳宜則猶豫不決 高中畢業後，原本快要在一起的柯騰與沈佳宜，卻因為柯騰舉辦的自由格鬥賽大吵一架，遺憾未能成為戀人。 看著一起追過多年的女孩步入禮堂，成了別人的新娘子，每個男孩都得到了各自的成長，也繼續追尋各自的幸福。
Adolescence is like a heavy rain. Even though you catch a cold from it, you still look forward to experiencing it once again. Ko-Teng has several close friends who had a crush on Shen Chia-Yi. Those friends of Ko's thus moved in unison from Ching Cheng’s junior high school straight into the senior high school division in pursuit of her. Naughty in nature, Ko was ordered by their homeroom teacher to sit in front of honor student Shen for her to keep close tabs on him. The two hadn't hit it off at first but Ko gradually fell for Shen, who was always pressuring him to study hard. On the other hand, Shen became impressed by the contrasting values Ko represented. Ko started pursuing Shen but Shen remained hesitant. After graduation from senior high, Ko and Shen almost became a couple but the deal was spoilt by a dukeout competition organized by Ko. Growing up together to witness their beloved Shen walking down the aisle to become someone else’s wife, these boys have learned their coming-of-age lessons and continue to pursue each’s happiness
