This is a filler episode . While the characters of Ain and Binz are designed by Oda for the movie, the arc itself is not part of the manga.
The crew discovers that their food is being stolen by a tiny girl named Lily. She reveals she is actually a giant on a mission to rescue her father, Panz Fry , a famous giant cook being transported to Impel Down. One Piece Episode 575
This episode served as a significant milestone, as the English dub returned from a long hiatus starting with this episode. This is a filler episode
Luffy decides to help Lily rescue her father because he is interested in Panz Fry's legendary cooking. She reveals she is actually a giant on
One Piece , titled " Z's Ambition! Lily the Little Giant! " is the 575th episode of the anime. It marks the beginning of the Z's Ambition Arc , a filler arc designed to lead into the movie One Piece Film: Z . Key Episode Details
Lily Enstomach , a giant who ate the Mini Mini no Mi (Mini-Mini Fruit), allowing her to shrink to human size.