Attack on Titan: Chronicle (2020)

The film begins with humanity living behind three enormous walls, protected from giant man-eating Titans. Eren Yeager dreams of seeing the outside world, but his life changes when the Colossal Titan destroys the outer wall of Shiganshina. Eren watches his mother die during the attack and vows to eliminate every Titan. He joins the military alongside Mikasa Ackerman and Armin Arlert, eventually becoming part of the Survey Corps the organization responsible for fighting Titans and investigating the world beyond the walls.