Childhood's End is the mostly faithful mini-series adaption of the Author C. Clarke classic 1953 novel of the same name. I thought that the book was good, but not necessarily great. I like this TV adaption more because it takes place in a contemporary setting and has more drama than the book. Many of the differences between the 1953 book and the 2015 mini-series have to do with which century events take place in. (Does this mean that there will be a completely different version of this story a hundred years from now?)
The story is that Earth is visited by seemingly benevolent aliens from another world who call themselves The Overlords. They guide humans into a golden age of peace and prosperity for all. However, some people fear that The Overlords are robbing us of our autonomy and our humanity. They think that The Overlords might have some agenda that they aren't telling us. This is true, but the agenda will surely come as a surprise because it is different from anything you might expect.
There is a subplot dealing with religious faith that I found intriguing.
This is a surprisingly beautiful, thought provoking, and well done adaption. The mini-series is current available to watch on the SyFy website.