15 years after Erik Heller rescues baby Hanna from a covert Romanian facility, the two live deep in the Polish forest. Erik trained Hanna to be an incredible killer 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.

When Hanna befriends a vacationing family, she is exposed to the indulgences of teen life.

When they reunite in Berlin, Erik presents Hanna to his old army friends and allies.

Erik tries to negotiate a deal with Marissa to get himself and Hanna safely out of Berlin.

Still reeling from her revelations about Erik, Hanna hides out in a suburb with Sophie.

Sophie and Hanna's relationship begins to turn sour over their shared interest in Anton.

Erik takes Hanna back to Romania so she can learn more about who she is.

When Erik reveals the truth about Utrax to Hanna, she is determined to take action.