Chu Zhi He who's a goodie two shoes and Wang Da Shu who has a personality that is rigid and sturdy like a tree learn to grow together as they fall in love. Like the show's namesake...
自高中時代就一直暗戀學姊紗繪子的小動爽太終於和學姊交往,並於情人節前夕卯足精力的為喜歡巧克力的她做出一大盒情人節巧克力,但紗繪子似乎對於兩人交往一事感到不解,但在爽太的要求下紗繪子帶走了巧克力。而後爽太為了紗繪子因而飛奔巴黎知名巧克力店「L'atelier de BONHEUR」學藝。
六年後「L'atelier de BONHEUR」決定於日本開分店並由爽...