Hanna returns to The Meadows with her cover as a loyal Utrax trainee intact thanks to John Carmichael, who leads the trainee program but has been coerced by Marissa to help. As the trainees prepare for their first missions, Marissa contacts a CIA analyst in Vienna who is on the target list, and uses him for information.

Hanna and Marissa move quickly now that they've been exposed. They plan to head to Vienna, believing it's the headquarters of Pioneer and home of the assassination program but Hanna first goes in search of Abbas.

Hanna and Marissa break into Pioneer headquarters and discover the frightening truth behind the assassination list and how it’s made. While inside, Marissa confronts Evans (aka The Chairman), leaving Hanna to escape with the evidence to bring down the program.

Hanna and Marissa have nearly lost. Hanna is held captive by Evans while the evidence that Marissa has to bring down the program turns out to be encrypted and unusable. When Hanna tries to escape she finds what could be the key to bringing down Pioneer.

Hanna and Marissa return to Pioneer headquarters as prisoners but with a mission to unlock the evidence they need to bring down the program. When they realize that Abbas and his daughter are in danger they race off to rescue them. In the forests outside Vienna, Hanna must save Abbas while Marissa confronts Evans one last time.