Watch anime online, stream anime episodes for free, you are watching One Piece Episode 416 English version online and free episodes. Anime Episode guide, Chapter One Piece Episode 416 English Subbed Saving Ace! The Next Stop: the Great Prison! Following a party, Luffy learns from Nyon that Hancock is a Warlord of the Sea, and that they have been called together as the Navy is launching an all-out offensive on Whitebeard. When Luffy hears that they are planning on executing his brother Ace at Marinford to lure Whitebeard out, he decides to save him from the prison Impel Down before he’s transported away.