“Shoot ‘Em Up” is the story about a man named Mister Smith (Clive Owen) who was minding his own business in while eating lunch and during a shoot out is forced to help deliver a pregnant woman’s baby. Now when that same woman turns up dead, Smith is give custody of the baby to protect the newborn from the nefarious Hertz (Paul Giamatti). Smith’s only help and friend in this whole affair is a motherly prostitute, Donna Quintano (Monica Belluci). Now Smith can’t mind his own business as he makes his way through the city, shooting his way through an army of gunmen who would see him and this crying baby dead.