Very highly rated TV series. If you receive an error saying it's not available for purchase on the US store, try logging out then back into you Microsoft account. VPN may be required. Enjoy :)
"From the director of Death Note comes Attack on Titan. Many years ago, humanity was forced to retreat behind the towering walls of a fortified city to escape the massive, man-eating Titans that roamed the land outside their fortress. This is their story."