Xue Hai (Show Luo) was a certifiable dork who comes from a very wealthy family and has been protected by his oldest sister since young, until he is 20 years old. One day, he decided to move out of his comfort zone and study abroad in Hangzhou. To protect his true identity, Xue Hai's oldest sister, Xue Bo, gave him the alias of Lin Da Lang, who was a supposedly poor student. In his new university, Da Lang meets Chen Bao Zhu (Rainie Yang), who protects him from bullies who tease him for being a dork. In return, Da Lang promises to be Bao Zhu's close friend and eventually, they fell in love with each other. During this time, Bao Zhu's father goes bankrupt, flees, and left her and her mother behind. Using Bao Zhu's father as an example of failure, Bao Zhu's mother forces Bao Zhu to date someone wealthier, and break up with Da Lang. On the day of her birthday, something happened to Bao Zhu that cause them to have a misunderstanding that expanded over years. Thinking that he got dumped by his first love, Xue Hai drops his alias as Da Lang. Three years later, Xue Hai has transformed himself from a dork into a play-boy. After hearing Bao Zhu's familiar voice on the radio as a DJ, Xue Hai decides to seek revenge but true love can't be separated so after seeing her with her 'judo senior', he became jealous and later on realizes that he still loves her. But what will happen when she finds out his real identity? Will the misunderstanding be cleared up? 我们都以为相爱会很久，或自己会先走。。难以忘怀这首歌。在宝茱身上看见了自己的影子。我不曾离去，却只能和你擦肩而过。海派甜心加油~。~乐死偶啦。很有新意也很有笑果一部青春偶象喜剧片。你可以说你不爱我，但别说让我放弃你。。双重人格的泡沫剧。结局很失望~~~。 杨丞琳凭借此剧获得第45届台湾电视金钟奖最佳女主角奖，罗志祥也成功入围该届金钟奖男主角奖。 台湾富商公子薛海化名达浪（罗志祥 饰）到杭州念书，同学欺负之时，得到学姐陈宝茱（杨丞琳 饰）出手相助，两人谈起了第一次恋爱。台湾的广告公司来到校园举行“甜心皇后”的比赛。宝茱拿到了冠军，从此被大家叫做“甜心”。这时甜心的父亲破产，抛妻弃女。甜心只得和母亲搬回台湾，因误会和与达浪失去联系。被抛弃达浪成了一个玩弄感情的花花公子。直到有一天听到电台“甜心时间”。薛海买下了电台，展开对甜心的报复，当看到甜心和别人约会的时候，薛海才发现自己仍然深爱甜心。于是达浪重新展开对甜心的追求。就在此时，甜心母亲发现达浪的大姐竟然是甜心父亲的初恋情人，于是强烈反对。 海派王子和甜心的爱情之路坎坷不断，何时才能回到真爱的本质？
