Yeah the story is familiar -but it is well told. I think that familiarity is more because it has elements of our universal story as humans than anything else. In fact Joseph Campbell's "The Hero with a Thousand Faces" talks about this and directors like George Lucas credited it when he did Star Wars. I also saw an interview of Will Smith where he gave it props.

Anyway it blew me away. I've been saying it's going to surpass the original estimates at the box office. It's a very hot topic on Twitter right now.