After a stint in a monastery in Tibet, Pendergast was given the task of finding a mysterious box, very harmful content. Constance will join, and narrowly, they will embark on the latest luxury cruise ship model, the "must" in the matter. Very quickly, it becomes a breeze for Aloysius to find, among the thousands of passengers who are most likely to hold the object of his research. But it's not so easy ... assassinations begin, and panic too. And a ship ... no way to flee.