Marcel is a 35-year-old chemist whose marriage is going through a bad moment. He loves his wife dearly but despite his constant displays of affection she is becoming more distant every day. One night, he hears her having a strange conversation over the phone and concludes she is unfaithful.
Marcel's sister, Ana, advises him not to intervene until he finds out the truth. Marcel's life is shaken once again when he finds out that his wife is actually cheating on him with a best friend. Influenced by past family experiences, he decides to take action and he and his sister devise a macabre plan.

Shot in: Barcelona, Portes del Montseny.