When a worker is found murdered on the construction side, the investigation swiftly turns from things criminal to the political circumstances surrounding the building itself. Widespread corruption and neglect by the builder himself are seen to have brought the situation about. Much of the movie is filmed using hand-held cameras, and the majority of the dialogue is in the difficult-to-understand and very slangy Spanish dialect of Mexico City's bricklayers.

生活是如此奇妙且难以预测，有时会在最不经意的地方发现幸福：一位七旬老妪和她的少年邻居之间产生了深厚的友谊。