Episode 977 - The Ultimate Showdown Kicks Off! Emperors Collide!

Episode 977
The Final Battle Begins! A Clash of Emperors!
Japanese: 最後の戦い開始! 四皇の激突!
Saigo no Tatakai Kaishi! Shikō no Gekitotsu!

Luffy and the crew set sail toward the final destination on the map, where they will face their most dangerous adversary yet. The Pirate King, who has been tracking their every move, confronts the Straw Hats with the goal of claiming the treasure for himself. The crew is forced into an intense battle against their most formidable foe yet, with the stakes higher than ever.