is one piece episode 393 filler?

Luffy's group begins to look for Rayleigh and "searches" the local amusement park. There they spend most of the day enjoying themselves, even fulfilling Camie's dream of riding the Ferris wheel.

However unbeknownst to them, a bounty hunter named Peterman is tailing them, having gotten info that Camie is a mermaid from the bounty hunters that Luffy's group previously encountered. Meanwhile, on another part of the Sabaody Archipelago, Saint Charlos, another World Noble, comes across a critically injured man and the doctors who are carrying him to the hospital.