Shingeki no Kyojin Season 2

Synopsis

For a century, humanity found refuge behind three colossal walls, shielded from the monstrous Titans that preyed upon them. This fragile peace is irrevocably broken when colossal invaders breach the outermost barrier, forcing survivors to retreat. As Eren Yeager and his fellow soldiers join the Survey Corps, their training is cut short by a new Titan assault on their remaining sanctuary. While fighting to defend their home, they begin to uncover unsettling truths about the Titans and hidden secrets within their own ranks.