During the game you can also experience the rich and dramatic story of the animated series of "Attack of Titan." All of the principle characters are here, and a range of a scenarios that place the spotlight on each of them are included.
In 845, when Eren was just 10 years old, the "Colossal Titan" suddenly appeared. Large enough to breach the Wall, it allowed other Titans to rampage through the city. One of them ate Carla, Eren's mother. With the so-called "Armored Titan" now preventing access, Wall Maria was abandoned and humanity were forced to fall back to Wall Rose. Having lost his family, his home and his dreams, Eren swore revenge on the Titans. Aiming to become a member of the Scout Regiment, he joined the "104th Cadet Corps."
Three years after Eren enlisted, the "Colossal Titan" suddenly appeared again. Eren tried to fight it alone but failed to defeat it. He returned to headquarters and then takes a squad out himself, but the mission was a failure with Eren suffering a terrible injury to his leg and many soldiers being killed. When Armin was about to be eaten by a Titan, Eren sacrifices his life to save him.
Immediately before the Trost District Wall was destroyed by the Colossal Titan, elite members of the Scout Regiment were on a mission outside the Wall.
The principle role of the Scout Regiment was to scout beyond the Wall, seeking a way to take back Wall Maria which was lost 5 years previously.
Setting up supply bases in destroyed towns and villages, they sought to secure a route for a large force to make their way to the Shiganshina District, where the Wall was destroyed.
Fighting with the Titans outside the wall as they go, they sought to secure the route while making new discoveries along the way.
The brave resistance offered by the Garrison Regiment, combined with the return of the Scout Regiment, was enough to keep Wall Rose safe from the Titans. Within the Walls, however, the same chaos descended as was experienced when Wall Maria was lost 5 years previously. Not only has the Colossal Titan attacked humanity again, but the damaged Wall has been repaired - unbelievably - by the "power of the Titans."
Is Eren an ally for humanity or just another enemy?
As the debate continues within the Walls, the Scout Regiment - newly joined by Eren - begin their 57th mission to the outside world.
The regiment receives a report that "a strange Abnormal has appeared in Wall Rose." The Wall Rose region is still protected by a Wall, so there shouldn't be any Titans there. Troops are quickly deployed in order to confirm or deny the truth of this report.