It's hard to summarize. The creator/director is Paolo Sorrentino who is a pretty bold, artsy, self-indulgent dude. He's not a guy who disappears behind the camera. He's a presence. He has ideas and he goes for it. I don't love every single move he makes, but I do like him on balance. I felt the same way about his movie Youth.
There are a lot of issues that are discussed with depth and intelligence. The nature of love as it applies to the church. They certainly address homosexuality and pedophilia. The business and politics of the church. Islamic terrorism. The general dippiness that can be part of any religious belief.
But there is a lot of genuinely soulful looking at the human condition.
The Young Pope of season 1 was a brash American played by Jude Law. At the start of season 2 he is in a coma and they decide to elect a new pope. That ends up being a tortured Brit played by John Malkovich.
It's pretty easy to guess whether or not the first pope will miraculously come out of his coma.
I would add: Sorrentino enjoys going sexy with things and that's why the opening titles are so interesting.
Three words: cloistered nun pussay.
Each episode starts with a new little dance video and it's completely absurd but really sexy and dammit, I'm kinda loving it.