One Piece episode 828

It aired on Sunday, 18 March 2018.

The Deadly Pact! Luffy & Bege's Allied Forces

The proposed alliance between the Straw Hats and Bege unfolds! A gaseous blast from the past, Gastino, a member of Bege's team, reveals the secret weapon that the team plans to use against the Emperor! But Gastino is not who he seems, and the bait in this trap is none other than Luffy himself!