The adventure is following this story of a boy and unravel his secret and mystery as he lives in a town surrounded by walls to keep Titans out. Not only does the boy have a secret. So does the town he grows to choose to defend as a soldier.

There is action that is pretty intense. This anime is not for those who are looking for a lovely light story. This series has a very raw feel and is gruesome at times to watch. But there is suspense that keeps you holding on and a mystery that needs solving.