Seven students from different countries come to Rome to a school for foreigners. The diverse age group joins in the classroom. Everyone is very excited, talking to each other, socialising, and laughing and found in a very cheerful atmosphere. Then comes the teacher begins to ask questions about them, asking where they come from, what they do in life, and what reasons are for coming to Italy. Everyone answers the questions. When everyone talks about their experience, all the other laughing and joking, suddenly the phone of one of the students start ringing, and the teacher turns to him and asks the same questions. But, the cheerful atmosphere changes.

Robert Williams is called by the police during a business meeting. His wife Lauren is in shock, after finding a dead man in her home. More dead bodies are found in the city the day after. The modus operandi looks the same but there's something not quite right. Is it the same killer or a copycat? Police start investigating the mysterious murders.