Episode 178 - The Grand Line! The Treasure of the Pirate King

Episode 178
The Grand Line! The Treasure of the Pirate King
Japanese: グランドライン！海賊王の財宝
Gurando Rain! Kaizoku-Ō no Zaihō

The Straw Hat Pirates engage in a battle with the mercenaries who have invaded the island. As the fight intensifies, the crew learns more about the mercenaries’ true motives and the connection to the island’s ancient past. The episode focuses on teamwork and strategy, as the Straw Hats fight to defend those who have dedicated their lives to studying history.
Skypiea Saga
Next Episodes:
Episode 179 - The Greatest Battle Begins! Luffy vs. the Pirate King's Forces
Episode 179 - The Greatest Battle Begins! Luffy vs. the Pirate King's Forces
Episode 180 - The Battle Continues! Luffy vs. the Forces of the Grand Line
Episode 180 - The Battle Continues! Luffy vs. the Forces of the Grand Line
Episode 181 - The Grand Line Adventure Continues! The Straw Hat Pirates’ New Goal
Episode 181 - The Grand Line Adventure Continues! The Straw Hat Pirates’ New Goal
Episode 182 - The Pirate King's Legacy! Luffy’s Resolve to Become King
Episode 182 - The Pirate King's Legacy! Luffy’s Resolve to Become King
Episode 183 - The Battle of the Century! Luffy vs. the New World Pirates
Episode 183 - The Battle of the Century! Luffy vs. the New World Pirates
Episode 184 - The Great Adventure! Luffy and His Crew Meet New Allies
Episode 184 - The Great Adventure! Luffy and His Crew Meet New Allies
Episode 185 - Luffy’s First Victory! The Challenge of the Pirate King’s Forces
Episode 185 - Luffy’s First Victory! The Challenge of the Pirate King’s Forces
Episode 186 - The Power of the Sea Kings! Luffy’s Next Step
Episode 186 - The Power of the Sea Kings! Luffy’s Next Step
Episode 187 - The Straw Hat Pirates’ New Beginning! A New World Awaits
Episode 187 - The Straw Hat Pirates’ New Beginning! A New World Awaits
Episode 188 - The Return of the Straw Hat Pirates! Luffy’s Final Battle
Episode 188 - The Return of the Straw Hat Pirates! Luffy’s Final Battle
Episode 189 - Luffy’s New Goal! To the Grand Line and Beyond
Episode 189 - Luffy’s New Goal! To the Grand Line and Beyond
Episode 190 - The Devil’s Fruit Revealed! The Power of the Pirate King
Episode 190 - The Devil’s Fruit Revealed! The Power of the Pirate King
Episode 191 - The Great Pirate Adventure Begins! Luffy’s Resolve to Become King
Episode 191 - The Great Pirate Adventure Begins! Luffy’s Resolve to Become King
Episode 192 - The Greatest Battle! Luffy vs. the Pirate King's Forces
Episode 192 - The Greatest Battle! Luffy vs. the Pirate King's Forces
Episode 193 - The Last Challenge! Luffy’s Battle for the Treasure
Episode 193 - The Last Challenge! Luffy’s Battle for the Treasure
Episode 194 - The Battle of the Century! Luffy vs. the Pirate King's Allies
Episode 194 - The Battle of the Century! Luffy vs. the Pirate King's Allies
Episode 195 - Luffy’s First Victory! The Pirate King’s Last Stand
Episode 195 - Luffy’s First Victory! The Pirate King’s Last Stand
Episode 196 - The Pirate King’s Promise! Luffy and the Crew’s Final Goal
Episode 196 - The Pirate King’s Promise! Luffy and the Crew’s Final Goal
Episode 197 - The Final Battle Begins! Luffy’s Challenge to the Pirate King’s Forces
Episode 197 - The Final Battle Begins! Luffy’s Challenge to the Pirate King’s Forces
Episode 198 - The Grand Line Adventure Continues! Luffy’s Next Step
Episode 198 - The Grand Line Adventure Continues! Luffy’s Next Step
Episode 199 - The Treasure of the Pirate King! Luffy’s Determination
Episode 199 - The Treasure of the Pirate King! Luffy’s Determination
Episode 200 - The Straw Hat Pirates’ New Beginning! Luffy’s Promise to His Crew
Episode 200 - The Straw Hat Pirates’ New Beginning! Luffy’s Promise to His Crew
Episode 201 - The Return to the Grand Line! Luffy and the Crew’s Adventure Continues
Episode 201 - The Return to the Grand Line! Luffy and the Crew’s Adventure Continues
Episode 202 - Luffy’s Decision! A New Challenge Awaits
Episode 202 - Luffy’s Decision! A New Challenge Awaits