In this 24th volume of the XIII series, Sente and Jigounov put Jason Mac Lane and the Mayflower Foundation face to face. All the means are good for the Foundation that is trying to recover the documents that Jason has in his possession. Jones and Carrington are threatened with death and it remains to XIII to understand his past as soon as possible if he wants to save his friends... and the American government itself. In this race against the watch, XIII will discover his incredible legacy, his illustrious ascendants and, closer to us, the sponsor of the murder of his adoptive father...