Hidden from society and trained by her ex-CIA father (Bana) to be the perfect assassin since birth, teenager Hanna (an energetic Ronan) enters the real world for the first time. Her first mission across Europe goes awry when she's intercepted by CIA officer Marissa (Blanchett) and her team of operatives, hell-bent on capturing the enigmatic father-daughter team despite an apparent lack of motive. In the midst of all the explosive chasing, fighting, and surviving, not unexpectedly Hanna begins doubting her life. Almost a coming-of-age action flick--though very human and intelligent.