Trouble strikes a group of tourists in Italy

Sarah and Michael Masson are on holiday in Italy, and their tour is making its way to Venice — Italy's most romantic city. But so far the trip hasn't been especially romantic. Michael has little patience for Sarah's sentimental nature or her stubborn insistence on socializing with their fellow travelers. Sarah is tiring of Michael's cynicism. But among their little group of tourists, there is even darker strife: One woman confides to Michael that her husband is violent, while that same husband propositions Sarah shamelessly. And eventually they are joined by two mysterious drifters — one of whom claims to be a mercenary.

The journey was meant to be a sunny escape, but storm clouds are clearly brewing. And as Sarah questions her marriage, the police are questioning Michael about a murder.