In his newly rented apartment, Juan, a comic book fan, waits for a sexy gothic girl to spend the night with. But just before she gets there, a friend shows up, asking for shelter for an unusual reason: he is afraid to become a werewolf. When the full moon rises, Juan sees with horror and dismay how his friend becomes a ridiculous dog-man.

A comedy about the relationship between a modern, shy, young man and the spirit of a violent knife-killer murdered in 1920. They make a pledge: the latter will tell the former what exists beyond death if he allows him to inhabit his body for a whole day. Thus, the ghost will go around an unrecognizable twenty first century Buenos Aires to uncover the causes of his own death.