In New York, the teenager Clary Fray (Lily Collins) goes to a night-club with her best friend Simon Lewis (Robert Sheehan) after seeing a strange symbol on the billboard that only she can see. She is also the only person capable to witness the murder of a man by a stranger in the club. Her mother Jocelyn (Lena Headley) and her boyfriend Luke Garroway (Aidan Turner) are worried when Clary tells about her weird ability. On the next morning, Clary finds that she has drawn lots of symbols in her room and she meets Simon to tell him what she did. Meanwhile Jocelyn is abducted by two men but she warns Clary that Valentine will chase her. Clary returns to her apartment that is completely destroyed and is attacked by a demon. However the stranger Jace Wayland (Jamie Campbell Bower) rescues Clary and brings her with Simon to a fortress called The Institute. Soon they learn that Jace and Jocelyn are Shadowhunters, warriors that fight against evil in an alternate world to save mankind. Jocelyn has stolen the Mortal Cup, one powerful Mortal Instrument, to avoid that the traitor Valentine Morgenstern (Jonathan Rhys Meyers) becomes powerful and dominates Shadowhunters and demons. Clary is also a powerful Shadowhunter and she has the location of the Mortal Cup hidden in her mind by her mother. Further, Clary and Jace fall in love with each other and together with Simon and the Shadowhunters Alec Lightwood (Kevin Zegers) and Isabelle Lightwood (Jemima West), they try to discover where the Mortal Cup is hidden in a dangerous journey.
"The Mortal Instruments: City of Bones" is a movie with good cast and top-notch special effects. However something Is missing to be a great movie. There are lots of information to be disclosed and many characters are not well developed like, for example, Valentine. But the worst is the lack of emotions, like the incestuous relationship between Clary and Jace that is not well resolved. Clary is also a rebel teenager that shows no affection to Jocelyn and when her mother is kidnapped, she changes her behavior. My vote is six.
Title (Brazil): "Os Instrumentos Mortais: Cidade dos Ossos" ("The Mortal Instruments: City of Bones")