Police in Bergen, Norway receive a call about an incident at a fish market; three years later, Missouri police officer Chuck Subke gets an assignment from the FBI.

The investigators get a breakthrough on a lead that points to an address in Milan, Italy; now they must convince the Italian police to take action.

After the raid in Italy, police discover that this case is bigger than they initially thought; evidence takes the police to Romania, where several victims are identified.

While the investigations in Italy and Romania provide many answers, there are still predators on the loose; the FBI become involved in the case.

The police and FBI plan a raid against a house in Hollywood that has connections with the suspect; then, an intensive manhunt begins.