is one piece episode 585 filler?

Chopper and Nami are trying to escape with the children until they come across a door and Chopper breaks it open. They step inside a cold room with frozen people.

Sanji and Franky already beat up all the hazmat suit guys and Sanji wants to kill the samurai because he is annoying. The samurai taunts Sanji because of his merciful behavior.

Franky then separates them saying that the samurai is just a helpless head. They then try to catch up with the children with Nami and Chopper.