Attack on Titan (Season 1)

Attack on Titan (second half)

So, remember this.

 Attack On Titan is set in a world where the remains of the human population live inside cities surrounded by enormous walls due to the sudden appearance of the Titans, gigantic humanoid creatures who devour humans seemingly without reason. The story revolves around Eren and his surviving friends enlisting to fight against the insatiable monsters.

So from episode 12 to 25 (season finale) we find that some how Eren has become a hybrid of a human/Titan.  His conscieness slips from Eren to the monster Titan.  The courts trying to side with the military police to make a decision if he is a danger to everyone or side with the Garrison Regiment if he can assist humanity with defeating the Titans.  But then there is a twist.  A female Titan with intelligence and special abilities appears out of no where when the squadren goes out on a mission outside of the wall.  The big twist is these super Titans are actually humans in the body of Titans just like Eren.  But we are not given access to this mystery.  There are hints along the way but nothing has come together as of yet.  

We end this season with the squadren rebelling against each other because of what they want to do with Eren and they find out that one of their members is the female Titan.  It ends with lots of questions but anticipation for the next season.