At the beginning of the film it was written in French that film was made based on true events. However, it is the trade in human organs in Kosovo, replacing the classical theory film presented in a way that is contrary to what is really happening. Serbs were Albanian victims of organ harvesting.
The first head of the UN Mission in Kosovo and former French Foreign Minister Bernard Kouchner has helped the film "The Cage" (Captifs), in which Serbs were portrayed as criminals who removed the organs and sell them Albanians in the West. The film is signed by French director Jan Gozlan, and it was financed by the Kosovo Albanians and Bernard Kouchner.
The real victims in Organ theft in Kosovo (sometimes also known as the "yellow house" case) were believed to be mostly ethnic Serbs of Kosovo, killed by perpetrators with strong links to elements of the Kosovo Liberation Army (KLA). Various sources had estimated that the number of victims ranged from a "handful", up to 50, between 24 to 100 to over 300.
Former Minister of Justice in the Government of Serbia Snezana Malovic believes that film is a frightening attempt to replace the role and creating confusion in the world public: "This film, in which Serbs were presented as killers and traders of bodies, apparently is intended to devalues Dick Marty report, which found that the Serbs were the victims of killings whose bodies were traded. It is intolerable mockery of the real victims and their families, which in this way they can survive yet another crime."