I say, lazy writer and director, contemptuous of their audience.
Minor spoiler alerts, though revealing less than the one-sentence synopsis. A young girl is being chased by a dozen bad guys, over the roofs, through the alleys. She hides for a few seconds, then comes out. Does she walk down the sidewalk, staying in the shadows? No, she strolls down the middle of the street. The first car that comes around the corner has three bad guys in it, two with hand guns and one with an automatic rifle. She gets away, of course.
She makes it to Chicago. Her uncle takes her to the local school to get her enrolled. We're in the principal's office. The principal says okay. Uncle and girl leave. The camera is looking at their backs as they go out the glass door and close it behind them. The word "PRINCIPAL" is on the inside, facing in (to tell the principal she's in her own office, I guess.)
Outside the school, the girl tells Uncle she wants to be an assassin, not go to school. "Kill people like this?" Uncles says. He pulls out a gun and shoots at a moving car, which crashes into a hydrant. "Gotta go to school first," he tells her. A dozen people are watching while he gives a little talk about growing up and responsibilities. Sirens sound in the background, but the two just stand there having their little uncle-to-niece chat.
It's fifteen years later, and the girl is now beautiful Zoe Santana. I give the movie one more chance. She's in jail, by design, a sexpot stuffed into a cell to sleep it off for the night. She gets out of her cell to the electrical room. She does a MacGyver, rigging the breaker for the fan in the air duct to short out. (She knows there's a fan in the air ducts and which breaker it is, of course, and the method wouldn't work anyhow, but so what?) In the duct, she looks at her watch. The cops would have taken it from her, of course, plus her necklace.) The fan goes off. It'll take her five seconds to slide past the blades, right? During that time, the sergeant tells someone to go fix it, the guy goes downstairs to the electrical room, finds the breaker, and turns on the fan. But only three seconds have passed for Zoe. She's only halfway past the fan and just makes it before the blades start. Whew!
In the next two minutes of movie time, she arranges to be in the men's washroom at the exact time a guard watching outside an IMPORTANT PRISONER's cell decides to go take a leak. After decking the guard, she now has the guy's gun and cap. She gets into the prisoner's cell and shoots him. Cops hear the shots and come a-runnin'. Does she take off? No. She has time to write some message on the dead guy's chest, go and get the unconscious cop from the washroom, drag him back to the cell, put the gun in his hand so he looks like the shooter, and then head for the stairway. We don't see this happen, of course. We see the cops rush in, grab the whoosy framed cop as he looks at the gun in his hand and mumbles, "I didn't do it."
"Get him outa here," Sergeant yells. So what do the dozen cops do now that they've caught the killer red-handed? They run to the rooftop, of course, where lovely Zoe is scurrying away. She escapes by diving over the edge where there's a convenient pipe to hang from while a guy looks over the ledge. One second after his face disappears, she slaps her hand back up to the ledge to climb back up. He'd only be a couple of feet away, but she's sure that he and the other cops will be facing the other way.
She gets back to her cell just in time for the sergeant cop to come in, gun in hand, to see if she's in her cell. Why would he?
I gave up. In this movie, characters behave in ridiculously illogical ways, use knowledge they would not possess (e.g. which of the 100 wires to short out), and rely on random events for a plan to work (e.g. the cop taking a leak at the right time). The screenwriter bends time to provide phony suspense. And, as mentioned, the director doesn't even know that the sign for the principal's office would be on the outside not the inside of the door.
Or perhaps doesn't care.
I resented the insult to the viewers' intelligence, and turned the movie off.