Secret 不能說的秘密, also known by its transliteration The Secret That Cannot Be Told, is a Taiwanese romance film released in 2007. It is the first movie directed by Taiwanese musician Jay Chou.
Plot
The story is about a high school student Ye, whom had studied in the school which coincidentally was where his father was headmaster at. Ye’s piano skill was unmistakably a notch above others. On the first day of school, while walking around the piano rooms, he heard an unknown and alluring melody played by Lu which led him to discovering the existence of her.
From then on, the two were always together, which thereafter led to incidents that gradually binded them together. However, Lu seemed to always carry a mysterious aura around her and when Ye tried to get to know her more, she always brushed off his questions by saying that it was a secret.
Unfortunately at the later stages , there was a misunderstanding between the both of them, which subsequently led to Lu's disappearance. Ye was heartbroken & tried to locate her whereabouts frantically.
But the more he tried to find out, he realized that things were not as they seemed with the chain of events that spiraled along during his search for Lu's whereabouts..
小伦(周杰伦饰)与父亲(黄秋生饰)相依为命，父亲是淡江艺术中学的音乐老师，小伦自小在他的熏陶下，拥有非凡的音乐才华。
这天是小伦转读淡江艺术中学的第一天，当他跟着同学小依(曾恺玹饰)参观校园时，突被一段神秘的钢琴乐曲吸引。
小伦随着琴音引领，走进一间百年琴室，发现弹琴者是一位清秀脱俗的女生小雨(桂伦镁饰)，两人虽然没有交谈，但在四目交投之间，双方都泛起微妙的感觉。
原来小雨是小伦的同班同学，由于冒失的小雨上课时总是迟到，故经常被迫和坐在后排的小伦坐在一起，两人的感情因此突飞猛进，更到达互相分享秘密的阶段；但每当小伦问及那天在百年琴室所听到的神秘乐曲时，小雨总是模棱两可地回答：“那是一个不能说的秘密……”。
距离毕业的日子越来越近，小雨决定向小伦公开神秘乐曲的秘密，于是相约小伦在琴室相见，小伦以字条回复小雨：“今晚琴房7:30，我也告诉你一个秘密”；怎料字条在阴差阳错之下，竟落在暗恋小伦多时的小依手上。
当晚小伦在琴室边奏着小雨喜欢的乐章边等待着，突然一双温暖的手盖着小伦的眼睛，双方情不自禁地拥吻起来，直至小伦张开眼睛，方知对方不是小雨而是小依；与此同时，小伦听到小雨的哭泣声从门外远去，小伦疯狂地追出去，但小雨早已芳踪杳然。
小雨自此仿如人间蒸发，音讯全无。小伦向同学打听小雨的下落，同学竟说从不知有小雨这个人。小伦到小雨家造访，竟被当成瞎撞。小伦翻看点名册，赫然惊觉名册上也没有出现小雨的名字……
直至小伦发现一张父亲和小雨的合照，向父亲追问关于小雨的一切，小伦方知小雨的出现绝非偶然，一切源自一首神秘的乐曲和一个不可告人的秘密……
Cast
* 周杰伦 Jay Chou as 叶湘伦 (Ye Xiang Lun): Music student majoring in piano and lives with his father.
* 桂纶镁 Kwai Lun-mei as 路小雨 (Lu Xiao Yu): Music student who lives with her mother.
* 曾恺玹 Alice as 晴依 (Qing Yi): Ye's admirer.
* 黄秋生 Anthony Wong as 小伦爸爸 (Ye’s father): The headmaster of Ye's school and his father.
