Pedro Che is a carefree taxi driver who advises his friends Sebastián and Artemio, politically committed law students, to do like him.

One of the delivery men and three workers from a water bottling plant discover that the owners, due to the depletion of the spring, are using common water. The four friends think about denouncing the scam, but realizing that they would leave all the workers in the street, they decide to form a competing company based on the same ruse.