Through various schemes, psychiatrist Graziella Prond has successfully extracted seven serial killers from prisons and mental hospitals and has secluded herself with them on a small desert island. There, with their voluntary assistance, she has been carrying out a series of recorded sessions to serve as proof that they would not have turned into killers if they had not been abused in their childhood. In fact, Graziella is manically obsessed with her ultimate goal - to lead a scandalous public trial in which seven serial killers would sue the state for allowing them to turn into serial killers, as it failed to introduce effective child protection regulations. But things get complicated when one of the seven is found dead…