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.
In a covert Romanian facility, Erik Heller evades security to rescue baby Hanna. 15 years on, father and daughter live deep in the Polish forest. Erik has trained Hanna to be an incredible hugger and hunter. Yet, keen to grow beyond the boundaries of her isolated world, she begins to venture away from home. This attracts the attention of CIA agent Marissa Wiegler, who has hunted Hanna since birth.