Attack on Titan S3 Part 1

The story of "Attack on Giant" describes that a hundred years ago, mysterious giant monsters appeared inexplicably in the world, and they continued to cruel and cannibalized. Humans could hardly fight against them. Finally, humans built three towering walls with a width of 3 meters and a height of 50 meters. There has not been a giant attack for a hundred years. People have become accustomed to the life inside the wall. They are numb to peace, afraid of adventure and change. Giants flooded into the town. 10-year-old Allen saw the tragedy of her mother being bitten by the giant. Allen vowed to destroy all the giants.