The tagline on the poster pretty much sums the film up. They took his daughter.
He will hunt them. He will find them. And he will kill them. And that, in
essence, is the whole movie. Liam Neeson is this ex-CIA guy whose daughter is
kidnapped by human traffickers on holiday in Paris. He therefore goes over to
Paris and kills everyone remotely involved until he gets her back.
Liam Neeson is his usual warm, lovely sympathetic self with big soulful eyes,
as he carves a trail of mayhem and destruction through this human trafficking
operation. It's not a big anger and revenge thing, so much as a father's brutal
ruthlessness in the face of an estimate that if he doesn't locate her in four
days, he never will. Thus the good guy is unimpeachably good - he's a concerned
father fighting for his innocent daughter's life, and the bad guys are
irredeemably bad - these are scumbags who kidnap young women travelling alone,
and sell them into lives of enforced prostitution. Thus, there is absolutely no
act on Neeson's part that you couldn't condone, and boy howdy does he use that
latitude. The action runs from gunplay, snap-the-neck martial arts to offroad
vehicular homicide.
Essentially the whole thing is an cathartic justicegasm from start to finish. A
real manly man's movie. Doesn't make a lick of sense of course, but hey, it's a
Luc Besson screenplay, and since when did it matter whether he made sense? It's
a case of sit back, relax, and enjoy watching Liam Neeson break the necks of a
series of very unpleasant men. An especially satisfying film if you're getting
on in years, and want reassurance that you can be an older man, and still
badass.