Three friends with broken lives, Poncho, Memo and Daniela, find a bag filled with cash in a secluded cabin. This creates conflict between them, putting their friendship at risk, as the money could solve the problems of only one of them.

A young man receives a series of letters engraved with the symbol of a snake eating its own tail. Inside them are an impossible photograph, a key and the name of a street. To reach the end of the mystery, he will first have to discover its origin.