What started as a chance meeting in the back alley for a smoke, ended up in a romance for Jimmy Cheung and Cherie Yue. Six months later, Cherie can no longer stand Jimmy’s habit of dragging his feet on everything and Jimmy is tired of Cherie’s temper tantrums. When Jimmy is offered a lucrative position in Beijing, their love in a puff is snuffed out. On one of his business trips to Shanghai, Jimmy meets a flight attendant Shang You-you, who falls in love with him immediately. Meanwhile, Cherie is sent to Beijing to open a new shop, where she meets and starts to date Sam, a Malaysian Chinese who works for an I.T. company.