After his mother's death, Chan Kai-yuk feels so alone that he leaves Guangzhou for Hong Kong to look up the father who abandoned him and his mom. But Yuk's hopes are dashed on finding his dad has a new family and considers him a burden. Alone and homeless, Yuk is taken in by Auntie Fen, a middle-aged recluse who leads a solitary existence. At first, their different habits and personalities lead to numerous squabbles, intensified by Yuk's self-centeredness and Fen's odd temperament. As time goes on, Yuk learns Fen is in the early stages of Alzheimer's. The discovery unexpectedly serves as a catalyst for the young man's growth as a caring friend. For the first time in her life, Fen feels truly blessed. But it is a situation rife with irony due to the nature of her disease and the accelerating elusiveness of feelings and memories.

　　一个在城市中游荡的不羁少年阿旭（陈家乐 饰），因一盒鸡蛋而结识了孤独老人芬姨（惠英红 饰），因为工作失意、生活窘迫，无处可去的阿旭利用“计谋”住进了芬姨的老屋，两个完全没有交集的人成为了临时室友。然而，生活在各自主张世界中的两个人，在同一屋檐下无法平静，脾气古怪的芬姨立下规条, 令年少轻狂的阿旭难以接受。从相互制约到彼此理解，从漠不关心到时时牵挂，两人的摩擦逐渐成为了解对方的最好方式。在冰冷的城市里寻找着温暖的陪伴，因为对方的出现，让自己成为了一个幸运儿。

有親不相親，無親卻相近。兩個互不相識的孤單人，卻在對方身上找到了溫暖。陳介旭（陳家樂 飾）自小父母離異，由母親養大，當母親因病去世後，他希望尋回唯一親人─爸爸。獨居女子芬姨（惠英紅 飾）為人糊塗，記性又差，靠著分租房屋維持生計，機緣巧合下，她將房子分租給阿旭，二人發展出一段仿如親人的關懷，各自溫暖對方的孤寂。

影片獲第36屆香港電影金像獎最佳女主角，第2屆德國中國電影節最佳女演員等幾個獎項。劇情講述香港出世的阿旭，父母離異後跟媽媽回到廣州生活。十數年後，母親因病去世­，阿旭隻身返到香港，希望尋回爸爸這位唯一親人。機緣巧合下遇上芬姨，但芬姨為人糊塗­無記性。二人由同屋住關係，發展出一段仿如親人­的關懷，各自溫暖對方的孤寂。阿旭最終找到爸爸，卻原來早已另組家庭，故對他極之冷漠­....