Rebecca Winstone is an ex-CIA agent who left the agency after her husband Paul, also an agent, was killed in a car bombing. For the last 10 years she's run her flower shop and devoted herself to raising her son Michael. Now 18, he tells her he wants to study architecture in Rome and she reluctantly agrees. All is well for the first few weeks but his frequents calls and texts suddenly stop. She flies to Rome after learning that Michael has been missing for two weeks. With the help of an old friend, Giancarlo, she eventually locates CCTV footage showing Michael being forced into a van. Someone is clearly out to stop her however.