Decent but very generic assassin flick, with a slightly stronger focus on the drama parts (why though?) and a female lead rather than a male one. The latter is clearly the supposed trump card of the film, sadly, it doesn't add anything substantial. On the contrary, Chastain's mediocre fight skills bring the film down.
Ava is a skilled assassin who executes hits on important people. When an operation goes sideways, her former employer wants to eliminate her. Ava escapes and seeks out the family she abandoned years ago. She soon discovers that trying to make amends when a contract killer is on her tail is pretty tiring.
Chastain is somewhat of a miscast, the action scenes are poorly edited and the story is pretty bland. On the other hand, the secondary parts are pretty decent, the pacing is good and the runtime is pretty short. It's not a great film, but it's proper genre filler when you want to give your brain a little rest.