在这部钥匙剧情片中,一个四岁的小男孩和一个婴儿单独留在家中，他们的母亲出外购物。年轻的穆罕默德对襁褓中的弟弟的哭声不予理睬，对在炉子上烧开的水壶也视而不见，因为更有趣的东西在吸引着他。当食物烧焦的气味，还有婴儿的哭声引起了忧心忡忡的邻居的注意时，穆罕默德却一时无法找到备用的钥匙让她进去，而他不得不亲自解决自己的难题。
这部难以确定类型的获奖影片由伊朗著名导演阿巴斯·基亚罗斯塔米亲自编写剧本，并参与剪辑。本片获得1987年柏林电影节最佳儿童影片水晶熊奖。
A young boy is locked into his apartment when his mother goes out and must care for his baby brother and cope with various domestic catastrophes while his grandmother and a neighbor try to locate his mother or the key to the apartment.
