This is one of the better Sci Fi shows out there. It can be dark in that it demonstrates how humans can become when tested. Just when you really like one of the characters the show reveals a side you won’t like. More like an anti hero comic book. But ultimately it’s about the survival of the human race and yet our most well intended actions destroy those efforts. Certainly waiting for season 6. Hoping many lessons were learned not to repeat the past that almost destroyed them.