剧情:

在寶(佘詩曼飾)和強(方力申飾)的婚宴上，投影機原本正播著他們相戀的過程，突然畫面閃出強跟性感女子做愛的片段，寶冷靜地走到台上宣佈離婚並將婚禮即時取消，這件事迅速成為網上熱話。

一年來，回復單身的寶與風流快活的強繼續保持友好關係，一天爛滾愛玩的強竟帶寶參加換妻派對，保守的寶本想離開，但遭強威迫利誘而無奈參與。在換妻派對上，兩人遇上杰(羅仲謙飾)與其妻子曼麗(傅嘉莉飾)，四人發展出浪漫而火辣的關係。這邊廂，在另一個婚宴上，當投影機又是播著新郎(陳智燊飾)與新娘(陳嘉寶飾)的溫馨片段時，畫面又閃出意想不到的片段…。

Synopsis:

At Bo (Charmaine Sheh) and Keung (Alex Fong) wedding banquet, the screen was playing their romantic scenes when it suddenly changed to Keung having sex with a sexy woman. Bo calmly walked onstage and announced divorce and cancelled the wedding on the spot. This incident was widely circulated online.

A year has passed and the single Bo and flirty Keung maintained their relationship as good friends. One day, the womanizing Keung brought Bo to a wife swapping party. The conservative Bo wanted to leave, but Keung pressurized her into taking part. In the party, they met Kit (Him Law) and his wife Man Lai (Kelly Fu). The four developed a romantic and passionate relationship. On the other hand, while another wedding banquet was playing a romantic clip of its groom (Jason Chan) and bride (Anjaylia Chan), something unexpectedly appeared onscreen…