Direct continuation of the anime " Invasion of the Giants 3". A screen version of the seventh story arc of the manga “ The Invasion of the Giants”. Peaceful times have come again inside the walls, and the reconnaissance squad is preparing for a new outing behind the Rose wall, straight to Shiganshin. Thanks to Hanga, the development of new weapons to kill giants with almost no human involvement is in full swing, and the long-lost hope of saving all of humanity has returned to the soldiers. But in Shiganshin, our heroes face an unprecedented danger that can destroy all plans of Erwin to return the Mary wall and destroy all dreams of finding out what lies in the secret basement of the old house Erena and Mikasa.