This series really is two sides of a coin. That's the best way to describe it.
One side is filled with despair and pain, the other filled with hope. The difference between season 1 and season 2 could not be more different in terms of what happens in the season itself - but with the same characters and the consequences of the first season in play.
I wasn't quite sure what I was going to get out of this, but the episodes simply blew by. It wraps up nicely too.
Definitely worth the watch.