This was an incredibly simple movie. The always watchable Liam Neeson plays a retired spy who left the business in order to spend more time with his teenage daughter (played by Maggie Grace). He reluctantly grants her permission to travel to Paris with a friend, even though he's nervous about her safety. Of course, it turns out that his fears were warranted, as his daughter and her friend are almost immediately kidnapped by a human trafficking/prostitution ring. The rest of the movie follows Neeson as he works to save his daughter.
There is nothing special about this movie. The action sequences are tight, but not groundbreaking; Neeson's performance is solid but not astonishing. However, at only 1.5 hours long, it doesn't wear out it's welcome, and it is clear that it doesn't have delusions of grandeur.