Jiabao (Stephy Tang), Qingqing (Linda Chung) and Zhirong (Sammy Leung) are childhood friends. Soon after Qingqing and Zhirong's wedding, Jiabao discovers that Zhirong's having an affair with Bilian. Zhirong asks her to keep the secret. Being soft-hearted, Jiabao makes a promise not to tell anyone. She tried to kept her promise, but eventually she has told the secret to her roommate Awen (Miki Yeung), who has nothing to do with either of the couple.