A pandemic caused by a mutation of the flu wipes out most humanity, and a group of survivors form a travelling theatre troupe, performing Shakespeare in settlements around Lake Michigan. How very topical.
For real though, I'm really loving this show so far. It was created by one of the writers on The Leftovers, one of my favorite TV shows, and the writing/storytelling is very similar. It's a show that doesn't hold you hand, and trusts you to be patient while the story unfolds.