XIII follows the piece of information he learned from Sanchez in the Venezuelan prison. It leads him to Ireland in search of Seamus O’Neal, an ex-IRA operative who was inducted into the CIA at the same time XIII was.

XIII is now pursued by the government but also by officials Synequanon looking to avenge that they hold responsible for the attack. XIII must find clues faster to disentangle and get out of this mess.

XIII and Amos grapple physically and mentally, as they try to uncover the truth behind the bombing of Synequanon’s headquarters. Fueled by grief and rage, Amos tortures XIII’s body and attempts to manipulate his mind. XIII strives to prove his innocence and escape from Amos’ twisted grasp.