Extremely advanced technology was found underground by a team of researchers in a sealed research lab. Since that day, this technology has been collected from other labs, studied, and reverse-engineered to drive humanity forward. But there are secrets in these "Vaults" besides technology. There's monsters, traps, and the horrific truths of the world all hidden inside.
Our main character, Ymir, must learn to balance his responsibility to his family and learn what it takes to become a Vault Breaker. Can he withstand the hellish Human Augmentations? Will he learn secrets of the world that his family has been researching?