西元2274年人類居住在由電腦控制的城市中，在這個(gè)城市中無優(yōu)無慮，可自由毫無拘束的追求享樂；但到30歲時(shí)每一個(gè)人必須接受考驗(yàn)，一個(gè)探究永恒、重生的試煉……

沒錢沒愛還沒心沒肺的馬騰（林更新 飾）人近中年一事無成，是旁人眼里公認(rèn)的“廢柴”！鋼廠退休骨干老林（李幼斌 飾）遵守鐵打的紀(jì)律活了一輩子本該安享晚年，身體和心理卻雙雙“亮起紅燈”！本無生活交集的兩人因?yàn)橐粓?chǎng)歪打正著的護(hù)工面試相遇，展開了一段啼笑皆非的有趣互救。老林為求解脫，將“協(xié)助自殺”的希望寄托在這個(gè)不靠譜的護(hù)工身上。馬騰雖然想賺錢完成女兒的心愿，但無膽害命，只能發(fā)揮自己的樂觀心態(tài)在日常中提供情緒價(jià)值給老林。二人在一段特殊的旅途中建立起生死友誼，于病痛與死亡的陰影里找到了活下去的小小微光，攜手大膽迎接未知的生活。

在本作品中，人們聽了從某個(gè)卡式錄音帶中流淌出的“某個(gè)旋律”后，自己也漸漸哼唱起了那個(gè)旋律，被卷入了不可思議的事件中。

　　The main character is Dr. Max Holst, a successful neurosurgeon. One day an intense little man named Steinmetz shows up, who has the real ability to create objects out of thin air, using only his mind. As no one believes him at first, he is held at a ward for mental patients, but manifests the key to his door and escapes. As he has a special interest in Dr. Holst, Steinmetz subsequently invites Holst to his large mansion, which is full of expensive paintings and sculptures, and proves to him that he can in fact materialise objects. Steinmetz’s abilities are evolving by leaps and bounds, and is progressing from being able to create objects only to being able to create living things. His ultimate ambition is to be able to create a human being. He tells Dr. Holst that if he will only perform a certain brain operation on him, Steinmetz will become able to attain his goal. He’s got all the necessary equipment set up in his basement. Dr. Holst, however, is too spooked by the whole thing to agree to this mad scheme, and refuses. Steinmetz then sets about manipulating Holst’s life, to pressure him into performing the operation. By then Steinmetz has become able to create a temporary human being, and in the hope that he can perhaps make his own creation perform the operation, he manifests a doppelganger of Dr. Holst. This double proceeds to take over Dr. Holst’s life, creating chaos for him professionally and personally. And then Dr. Holst starts fighting back. The ending has the dual virtue of being both unexpected and satisfying.