Following his wife's death, Dr. Nate Samuels (played by Idris Elba) takes his daughters to visit his friend Martin Battles (Sharlto Copley) at the Mopani Reserve in South Africa, where his wife came from. There they encounter a rogue lion who's killing every human being he finds.
Sadly, the dialogue/human-only scenes in this just aren't that strong. Elba and Copely deliver lackluster performances, especially Elba in the weakest role I've ever seen him do. The two younger actresses actually do better than the established actors, but unfortunately in the first third they've just got very cliched kinda bratty girl dialogue to work with. The movie isn't helped any by the cliched father-trying-to-reconnect-with-his-daughters storyline.
The actual lion/action parts aren't too shabby. They don't break the mold or anything (with the exception of the last fight scene which is surprisingly good). But there are some solid moments and uses of the lion and environment.
Close-ups of the lion don't work that great as it's not composed of the most convincing CGI. This movie has some interesting camera work. There aren't a lot of close- or far-shots; the camera mostly follows behind the characters, evoking a feel of sharing the character's experience. Not saying the camera work is excellent, but it was a choice, and I give the director credit for going with it. Scenery and sets aren't shabby, again not groundbreaking but not shabby.
So yeah, this isn't a particularly good movie, but it's not awful either. Not worth paying money to see, but if you like mindless action films, particularly killer animal, this is the sort of time-waster that'll do it.