A talented young programmer, Luca Barberis, in a state of passion, commits a brutal murder. He manages to leave Italy. Confident that he will never be found, Luca sends emails to the investigating judge in charge of his case, Giulia Ambrosini. She answers, and gradually the correspondence draws them both in. Together they manage to unravel a huge fraud committed using the Internet. Meanwhile, new murders related to this case occur in Italy. Finally, the terrible truth is revealed to them...