When her parents are killed during a breach of the walls that have kept humanity safe from the threat of the titans for over a century, f/n finds herself enlisting in the Survey Corps after being inspired to do so after a scout saves her life. Forming part of the elite Special Operations Squad with her fellow cadets and friends, they find themselves separated from the rest of the regiment during an expedition and forced to seek shelter in what seems to be an old abandoned house from before the times the titans appeared. Yet this seemingly safe shelter is not as safe as they hope and things take an unexpected turn that cause her to come face to face with someone from her past...