建筑师托尼(梁家辉 饰)的个性十分木讷老实,以至于他暗恋同时艾琳(陈雅伦 饰)多年,却总也鼓不起勇气表白,更糟的是,艾琳已有一位感情亲密的男友,托尼的单恋似乎注定不会有结果。一次偶然中,托尼被猛鬼缠身,索性得到名为嘉嘉(关之琳 饰)的女鬼相助才得以脱身,也正因为这件事,托尼拥有了能与嘉嘉心意相通的特异功能。 得知了托尼的苦恋,热心的嘉嘉决定帮他一把,一番波折之后,艾琳终于离开了男友,投入了托尼的怀抱,可是,直到这时,托尼才发现自己其实早已经深深的爱上了嘉嘉,无奈人鬼殊途,无法承受分离之苦的托尼竟然决定殉情。Building Inspector Tony (Tony Leung Ka Fai) investigates an old abandoned building in a deserted plant site and falls victim to a restless demon, who wants to resurrect into Tony's body. However, the spirit of a young woman (Rosamund Kwan) suddenly appears, saves Tony, and accidentally sucks some of his life force, thereby, sharing his feelings and emotions. The ghost falls in love with Tony, but he wants to use her to help him woo his gorgeous colleague (Ellen Chan).