Chapter 556

Chapter 556 is called "Justice will Prevail!!".

Summary
With Oars defeated, Whitebeard's forces surge through the opening that he created. The 13th Division, led by "Water Buffalo" Atomos, attack Doflamingo, but the Shichibukai uses his powers to take control of the man and turns him against his own men. Elsewhere, Coby and Helmeppo, terrified of all of the carnage, try to flee from the battle but stop when they witness Admiral Akainu execute another deserter, and they overhear him being informed that the preparations for a new secret strategy have been completed.

Elsewhere, Doflamingo taunts the pirates he has engaged, making a speech about how the definition of evil and justice have changed throughout history because history is written by the winners, and whoever wins this battle will be considered justice.

Whitebeard's forces manage to make a second breach in the Marines' ranks thanks to an icebreaker, but Sengoku has his secret strategy ready, and has his forces notified. Garp goes up to the execution scaffold and reveals that he does feel pity for his adoptive grandson, but he is still not going to interfere.

Meanwhile, Coby and Helmeppo are surprised at Sengoku's plan, as it involves executing Ace ahead of schedule, and are fearful of the consequences. Just then, however, a Marine battleship come tumbling out of the sky, and with it, Luffy and his small army of Impel Down allies.