Two married couples have been invited over by Daniel, a middle aged writer and beekeeper, to spend a weekend at his farm. Things run amiably and smoothly over lunch. Married couples are composed of a mediocre lawyer Esteban and his frustrated wife Natalia, and a perfectionist engineer Francis and his beautiful young and inquisitive wife, Paola. Another couple, friends of Daniel's, joins them later for lunch: a brilliant and famous international actress, Alexandra, with his handsome and mysterious companion Jacobo.

To their surprise and dismay, the two couples realize that Jacobo, Alexandra and Daniel form a loving threesome or throuple. Once they get used to the idea, however, Alexandra provocatively reveals Daniel's plans for them: his invitation was aimed at enjoying a special gift from the three of them: an orgy centered in his beloved new girlfriend and actress. The peaceful lunch then becomes a devastating earthquake for both married couples.