A cruise trip brought about the magical union of Jason Tin (Nick Cheung) and Yama Fong (Maggie Cheung), two down-and-out strangers. Yama did not mind that Jason was a bankrupt and within a short week of being together, they had a romantic wedding onboard a ship. However, they split up due to a misunderstanding later. The two of them treated this swift marriage and divorce as a practical joke, but little did they know that the effects of the divorce dealt both parties with such great blows.

愛不可猜，緣不可尋，它能瞬間開始，也能瞬間消逝！ 一次郵輪旅程，讓田偉晨（張家輝）與方雅文（張可頤）這兩位失意落寞的陌路人奇妙地走在一起，在短短的一星期內由戀愛到兩人決定踏入人生另一階段，更即興在船上舉行婚禮。來如風的愛情去也如風，旅程完畢後因一次誤會而令此段婚姻終結。離婚後，二人各散東西，但不久，兩​​人又巧合地在同一間旅遊公司碰面。更成為一對鬥氣冤家，公事上處處針鋒相對。他倆背後都有著其軍師，晨得好友嘉（騰麗名）及強（蔣志光）的支持，而文則得上司馬愛玲（陳秀珠）的幫助，鬥爭一度白熱化。私底下，晨赫然發現與文的離婚手續未弄清，擔心隨時會被她追討贍養費，遂率先展開一項名為“紅娘先生”的計劃，刻意介紹舊同學劉華（歐錦棠）予文認識，而華實在正存心部署騙財騙色，幸晨及時揭發。文因此體會晨對自己是真心，但適逢此時文發現嘉原來是自己同父異母的妹妹，頓然對男人信心全失。在情路上歷盡考驗的文，傷心欲絕，再一次乘郵輪離港……