The "Blue Queen" is one of the most expensive diamonds in the world and naturally tempts many thugs; one night Yannis finds himself driving on a criminal hike with a gang of robbers, which brilliantly completes the blow. But the business is complicated from the moment in which, a few days later, the man is taken in his own home by the thungs of the boss Yannis works for. He seems to be the only witness of the death of his son, killed in cold blood in the parking lot identified for the recovery of the gem.