45歲的王蕾(賈靜雯 飾)的女兒,同樣17歲的白白(程予希 飾)令他們的人生再度交錯,45歲的林克銘(任賢齊 飾)突然收到網上傳來的一封信,一封似是遲來的、王蕾的信,讓他再度憶起,那份純情的年少時光、那段屬於十七歲的狂妄 ,還有那份寂寞的遺憾......十七歲 ,好久不見,《十七歲》電影插曲任賢齊賈靜雯對唱的《First of May》 讓人聽了不禁感到傷感。滯悶的高中校園,17歲的林克銘和王蕾因為一場英文演講比賽而拉近了距離,懵懂的情感才剛萌芽就在年輕的羞澀與突來的事件中錯過而結束,沒想到20多年後,因為王蕾17歲女兒(白白),令他們的人生再度交錯。45歲的林克銘,突然收到了王蕾的信,這回信晚了20多年,卻讓他憶起那段青春,回憶洶湧而來,他不由自主的想找出懸在心頭的答案。《十七歲》留下了很美好的回憶,即使青春有過失誤,那也能讓人無比懷念。
When I was small, and Christmas trees were tall, we used to love while others used to play. Don't ask me why, but time has passed us by, some one else moved in from far away. Now we are tall, and Christmas trees are small, and you don't ask the time of day. But you and I, our love will never die, but guess we'll crye first of May. The apple tree that grew for you and me, I watched the apples falling one by one. And I recall the moment of them all, the day I kissed your cheek and you were mine. Now we are tall, and Christmas trees are small, and you don't ask the time of day. But you and I, our love will never die, but guess we'll crye first of May. When I was small, and Christmas trees were tall, do do do do do do do do do... Don't ask me why, but time has passed us by, some one else moved in from far away.