Claire is a workaholic attorney who flies to Paris to lick her wounds after being dumped by her girlfriend of seventeen years. On the plane she chats with the young woman sitting next to her, and when they land the woman is inexplicably detained in customs. Claire has no idea what is going on, but decides it really isn't any of her business. Claire is surprised when she later runs into the woman in the city. They agree to meet for breakfast the next morning, but when the woman doesn't show up Claire goes to her hotel and makes a horrifying discovery. She soon finds herself ensnared in a web of intrigue and international terrorism, becoming the target of a high stakes game of cat and mouse through the streets of Paris.