is one piece episode 782 filler?

Prodi confronts the Sanji retrieval team at the coast of Fron Island, intent on defeating them in order to maintain his base's reputation of strength that they need to operate against Big Mom. Should he fail, he will likely be demoted and transferred to a new island, where he will be forced to retire without the pension amount he desires.

The Sanji retrieval team is surprised at his intentions, but press on, knowing they can escape once they get to the Shark Submerge III.