Betrayed by his superiors and left for dead, XIII has definitely left the secret service in favor of a wandering life. In the hope of finding food and shelter, he went to Empire City and meets Betty Barnowsky, a beautiful activist involved in the fight against the major energy groups. Betty saving a police raid muscled XIII calls within the Veil, an underground organization led by Max Vargas. Veil attempts to expose openly the climate research center Hearpe (High Energy Auroral Refraction Protonospheric Emitter), whose real purpose is to influence the climate for economic reasons. Betty seduced both by itself and by his speech committed XIII agrees to help activists.

Caught in the permanent storm surrounding Ariella Island, XIII is shipwrecked. Posing as a fisherman, he is befriended by Dr. Westlund who holds critical information about the letters. The aging scientist and his daughter Gale hide XIII from the Synequanon security forces holding them prisoner. On the mainland, Harriet Traymore wins the presidential election but Carrington refuses to leave office.

When falsely accused of a murderous attack against the headquarters of the group Synequanon conglomerate in charge of the project Hearpe, XIII realizes he has been manipulated. He was soon captured and tortured by an agent whose identity remains a mystery.

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.

XIII, Betty and Mozambique rush to free Vargas before he’s deported to Guantanamo, as they believe he must have information about the letters. Synequanon’s tests of their newest technology have unforeseen, cataclysmic results.

The safety of the world is at stake. The Chinese HEARPE is now fully operational. With the help of Betty and Barnabis, XIII tries to destroy HEARPE while XIII.2 attempts to unleash its destructive force – a terrifying array of natural disasters - on the United States. But only one man will triumph. Only one man will survive. Making his last stand in the bunker, Carrington contemplates extreme measures.

XIII crashes an ultra-exclusive birthday party to find the final letter. The host of the party, and the owner of the letter, is a Russian Oligarch with a penchant for collecting expensive items such as rare weapons and beautiful women, and using the former on the latter. Part of his collection includes one of the Tesla letters, and XIII finds he isn’t the only person who’s come looking for it.

XIII is delivered into the hands of Xu Corporation, who believe him to be Victor Gong, also known as XIII.2. While XIII allows the deception to continue, he is plagued by memories that force him to question his true identity. President Carrington imposes a state of martial law, halting the transfer of power to Harriet Traymore.

Betty and XIII both question the reality of their situations: concealing his true identity, XIII sails to China, searching the ship for the final letter which has been hidden somewhere on board; Betty is abducted and delivered to her father in London, who claims that her experiences with XIII and the Veil have been nothing but the narcotic-induced hallucinations of a runaway.

XIII, Betty and Amos escape from The Pit and into Shanghai but are trapped in a mysterious and sinister riot that has spontaneously formed around them. Thirteen-year-old Yen-Boi and his father Ping help them find and fight their way through the chaos. With access to a Navy Seal helicopter, Amos leads them towards the extraction point. Carrington is pushed further into the bunker by Traymore’s forces, and makes a last-ditch effort to rally support.

XIII is thrown into The Pit, an underground dungeon where prisoners are forced to fight to the death in matches broadcast live online. XIII tries to rally the prisoners, which include Amos, Mozambique and Grier, while staying alive long enough to attempt an escape. XIII.2 and Betty mastermind a hostile takeover of Xu Corporation.

Xu Corporation gives XIII the face of agent Victor Gong (XIII.2), which only intensifies his struggles with identity. Betty plots revenge against her father by trying to sabotage his efforts in China. Carrington watches his empire crumble around him.

Having been unjustly locked down in a brutal rendition camp for two years by NSA Director Amos, XIII is sprung in a daring escape by mysterious allies. These allies turn out to be Ex-President Sheridan and psychotic freelance killer Irina Svetlanova.

XIII and Sam follow a clue from Sheridan to Green Falls, a small town where XIII may have grown up.As XIII begins to ask questions about himself and his father, who is a local reporter, XIII stirs up old secrets and modern-day violence.

Chasing another lead from Sheridan, XIII gets himself thrown into a brutal Venezuelan prison in search of a prisoner who might have worked with XIII when he was a CIA operative.

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 follows the trail of his identity to a paramilitary training camp in the Pacific Northwest named Bitterroot where he supposedly trained. As XIII tries to discover the nature of the secret mission he was being trained for, he runs afoul of the camp’s owner, Rech.

Having learned in Bitterroot that he was trained for a corporate intrusion mission in Costa Verde, XIII and Jones head off to investigate. As they dig deeper into XIII’s possible involvement there, they make stunning discoveries.

XIII and Jones travel to Chicago in search of an agent who has one of the watches.

After reluctantly going to Irina's, XIII and Irina are captured by a rogue team, and after escaping they are hunted by the commandos. Meanwhile Jones and Amos are becoming suspicious of CIA Director Frank Giordino.

XIII is hot on the trail of now-exposed CIA director Giordino and tracks him to a safe deposit box in Moscow where Giordino has secreted money, documents and blackmail materials in case of an emergency.

Following Giordino as he makes use of the mysterious information from his burn box, XIII and Jones find themselves looking for a young boy whose parents Giordino has brutally murdered.

XIII and Jones infiltrate a bunker to reach Max Serle, with Irina and her team in hot pursuit.

XIII and Dillon work frantically to break the password from an encrypted file.