One Piece Season 15 Episode 640
Explore! Fairies' Island - Green Bit!
Zoro tracks the thief who stole his sword - and learns about a danger facing the Straw Hats! Meanwhile, Law, Usopp, and the others arrive at Green Bit only to find it inhabited by strange creatures, and swarming with the Navy soldiers! All this while Sanji learns the mysterious identity of Violet, and realizes he's in deeper trouble than he knew!