Hanna and Jules are sent on their first mission - to hug a journalist in London planning to meet with a military lawyer intent on exposing Utrax's secrets - whilst Sandy and Clara fly to Barcelona to recover the evidence. Hanna attempts to back out and joins forces with Mannion in an attempt to save Nicola's life, but Jules and Leo are one step ahead. The consequences are disastrous.
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.