Central City is, more than ever, the centre of an obscure plot with ramifications beyond the imagination of our protagonists. Colonel Mustang sees his unit dismantled while Edward and Alphonse face the enigmatic geniteur of the homonculus. The latter succeeded in rallying Lin to his cause, the prince of Xing succumbing to the powers of the philosopheral stone. Although determined to break through the mysteries that are growing, Edward goes to Riza Hawkeye where the lieutenant will tell him about the terrible chronicles of the Ishbal war. An exciting flashback at the heart of this primordial conflict to better understand the power struggles that agitate Amestris!