Summary:
When the Sea Kings stopped and saved the great ship Noah, Shirahoshi learned a surprising secret from the Sea Kings. Meanwhile, the missing and captured mermaids were found but replaced with other valuables from the palace. The remaining humans and the New Fish-Man Pirates are rounded up and captured by the Straw Hat Crew and Jinbe, while Shirahoshi rescues a collapsed and unconscious Luffy from Noah’s remains. However, if Luffy is to survive the injuries from his battle with Hody Jones and the failed destruction of Noah, the only thing that can save him is a blood transfusion, but the merfolk are reluctant to donate blood as it is forbidden in Fish. -Man Island to give blood to a man. Jinbe volunteers to be a pirate. The episode ends with Luffy asking Jinbe to join his crew.
After the Sea Kings stop Noah, it is revealed by them that Shirahoshi has actually been their queen since she was born. At the same time, the Royal Guards report the current situation to the Minister of the Left, and Neptune notes that the power to destroy the world has finally awakened. The three princes prepare to capture Hody Jones and Vander Decken IX. As the Sea Kings take Noah away from Fish-Man Island, they talk about how Luffy could hear their voices and compare him to the late Pirate King Gol D. Roger. When they relocate Noah to the Sea Forest, they leave wondering if Noah can be repaired by the “appointed time”.
Meanwhile, the kidnapped mermaids are found in the royal palace, but they have been exchanged for the entire contents of the treasure chamber, including the national treasure – the Tamate box. However, Neptune ignores this information, saying that they almost lost an entire nation right now and that they need to clear the Straw Hats’ names because they were wrongly accused.
Down on the battlefield, the humans and the New Fish-Man Pirates are stopped by Jinbe as they try to get away. As they plan to escape him with their bubbles, Jinbe fires a water blast, attacking anyone who tries to escape. The Minister of the Left states that they bear full responsibility for making a mistake in their fact-checking process. When the merfolk exclaim that they never suspected the Straw Hats anyway, they are embarrassed when the children point out that they blamed and didn’t believe them all along because they were human. The Three Princes return from the outside with a battered Hody Jones and Vander Decken IX. and announce that they will no longer allow them to cause trouble.
As the merfolk celebrate, they are interrupted by a crying Shirahoshi, sobbing over Luffy’s injuries and how his bleeding won’t stop. Chopper announces that Luffy needs a transfusion, but the merfolk are reluctant to donate blood because it is against the law to donate blood to a human. Jinbe steps up and offers his own blood because he’s a pirate and doesn’t need to follow the law.
As the blood flows through the tube, flashbacks of the last moments of Fisher Tiger, Otohime, and Whitebeard, three important characters who almost managed to bring peace between humans and merfolk, appear. When the blood finally reaches Luffy, he smiles and while everyone rejoices that he is alive, he invites Jinbe to join his crew.