This movie has a start, mid plot and an ending. But there is not a hint or some kind of explanation what these black smoke entities, that destroyed the planet population, are. I paid the ticket, due to Mrs. Bullock. Her acting is good, as expected. Her co-leading character, with whom she relates (intimately), is one of the human race's last survivors. He could be female or male, white, yellow, black or chocolate colored. But as Hollywood movies are trying to impose frequently from 2000+, is a black male. Even more lucky Mrs. Bullock, the production chose him to be also a young, nice looking, sensitive and well-built individual, so the relationship between them, is an easy one. She really won the 1 to 7billion lottery there. The movie is nothing extraordinary. Has some action, some boring parts, some drama, some violence and some love. All comes in "some" quantity. You can give it a try, if you don't have something else to do or watch .