A Japanese manga The series began serialization(连载)on 2009The animation produced between April and September 2013 During the long history of human, men were once getting close to extinction（绝种） due to the predation(捕食捕食)from Titans. (巨人)The wall is built to keeps people away from Titans as the price of Peace，people living in peace like cattles in cage.Titan is generally 3 to 15 meters high, the super Titan can even reach 60 meters high, and the human is only about 2 meters. Titans weakness in the back of the neck of a size of 1 square metres of meat. The average killing a Titan requires 10 human. But one day Titans that ruined the walls appeared. Eren JaegerEren Jaegermale leadafter that disaster，he starts his journey for revenge against the Titans(四个军种）四个军种）The Scouting legion 调查兵团调查兵团 (wings of liberty）（自由之翼）Stationed regiment 驻扎兵团驻扎兵团holding the mortal determination to challenge the wall giant fieldsResponsible for strengthening the wall, each city defense. 宪兵团宪兵团beside the king management people, to maintain orderMilitary police regiment responsible for the training of new recruits.Training corps训练兵团训练兵团During a battle,Eren is shocked to find that he has the ability to change into a titan.His ability is a ray of hope to some people but a threat to others Can the humans drive all Titans from the land of human?thats all.thank you