The episode begins with a scene in the Holy Land of Mariejois, where the Five Elders are in a state of agitation. They discuss the recent events surrounding the Wano Country and the implications of the Straw Hat Pirates' actions. The tension is palpable as they express their concerns about the rising power of the Yonko, particularly focusing on the threat posed by Monkey D. Luffy and the alliance he has formed.

As the scene shifts, we see Blackbeard, also known as Marshall D. Teach, in a dark and ominous setting. He is laughing maniacally, reveling in the chaos that is unfolding in the world. His demeanor is confident and sinister, showcasing his ambition and desire for power. He discusses his plans with his crew, hinting at his intentions to capitalize on the turmoil in Wano and the potential for seizing more territory and influence.

The narrative then transitions back to Wano, where the Straw Hat Pirates and their allies are preparing for the upcoming battle against Kaido and the Beast Pirates. Luffy is shown training vigorously, determined to become stronger and protect his friends. His internal motivation is clear; he feels the weight of responsibility on his shoulders and is driven by his desire to liberate Wano from tyranny.

Meanwhile, we see the samurai and the other members of the alliance strategizing their next moves. Kin'emon and the others are deeply invested in the plan to infiltrate Onigashima, where Kaido resides. The stakes are high, and the tension among the group is evident as they discuss their fears and hopes for the future. Each character's emotional state is highlighted, showcasing their resolve and the personal stakes involved in the fight against oppression.

As the episode progresses, we witness a flashback that reveals more about the history of Wano and the significance of the Kozuki clan. This backstory adds depth to the current conflict, illustrating the long-standing struggle against the oppressive rule of Kaido and Orochi. The emotional weight of this history resonates with the characters, fueling their determination to reclaim their homeland.

The episode then cuts back to Blackbeard, who is seen plotting with his crew. He expresses his desire to confront Luffy and the other Yonko, viewing them as obstacles in his quest for ultimate power. His laughter echoes ominously, foreshadowing the chaos he intends to unleash upon the world.

In the final scenes, the focus returns to the Straw Hat Pirates as they finalize their preparations for the raid on Onigashima. The camaraderie among the crew is highlighted, showcasing their unwavering support for one another. Luffy's resolve is stronger than ever, and he rallies his friends, emphasizing the importance of their mission. The episode ends on a cliffhanger, with the characters poised for the impending battle, leaving viewers eager for the next installment.

In the ending of One Piece, season 21, episode 917, the focus shifts to the tumultuous events in the Holy Land of Mariejois, where the world is in chaos due to the news of the Reverie. The episode highlights the reactions of various characters, including the powerful Emperor Blackbeard, who revels in the turmoil. Meanwhile, the Straw Hat Pirates and their allies continue to prepare for the impending conflict in Wano, setting the stage for future battles and alliances.

As the episode unfolds, we see the aftermath of the Reverie, with the world leaders in disarray. Blackbeard's sinister laughter echoes as he contemplates the chaos, revealing his ambition and the threat he poses to the world. The episode ends with a sense of foreboding, as the Straw Hats and their allies brace for the challenges ahead, underscoring the ongoing struggle for freedom and justice in the One Piece world.

The episode begins with a sweeping view of the Holy Land Mariejois, where the atmosphere is thick with tension. The camera pans over the grand structures, showcasing the opulence of the Celestial Dragons' domain, juxtaposed with the chaos that has erupted following the events of the Reverie. The leaders of the world are seen in disarray, their discussions filled with panic and uncertainty.

As the scene shifts, we find ourselves in the presence of Blackbeard, the notorious Emperor of the Sea. His dark, menacing figure looms large as he cackles with glee, reveling in the turmoil that has engulfed the world. His laughter is chilling, a stark reminder of his ruthless ambition. Blackbeard's motivations are clear; he thrives on chaos and seeks to exploit the weaknesses of others to further his own power. The camera captures the gleam in his eyes, reflecting his insatiable hunger for dominance.

Meanwhile, the Straw Hat Pirates are preparing for their next move in Wano. The atmosphere among the crew is one of determination and camaraderie. Luffy, with his trademark enthusiasm, rallies his friends, reminding them of their shared goal to liberate Wano from the oppressive rule of Kaido and Orochi. Each member of the crew is shown in their respective roles, highlighting their unique skills and unwavering loyalty to one another. The emotional stakes are high as they reflect on their past struggles and the bonds they have forged.

As the episode progresses, we see glimpses of the other characters involved in the ongoing conflict. The tension builds as the narrative shifts back to Mariejois, where the world leaders are grappling with the implications of the recent events. The camera captures their worried expressions, emphasizing the gravity of the situation. The stakes are raised as alliances are tested, and the threat of Blackbeard looms ever larger.

The episode concludes with a powerful montage of the Straw Hats and their allies, united in their resolve to face the challenges ahead. The final scenes are filled with a sense of urgency and anticipation, as the characters prepare for the battles that will define their futures. The screen fades to black, leaving viewers with a lingering sense of excitement and dread for what is to come.

In summary, the episode encapsulates the turmoil of the world following the Reverie, the sinister ambitions of Blackbeard, and the unwavering determination of the Straw Hat Pirates as they prepare for the conflicts that lie ahead. Each character's fate hangs in the balance, setting the stage for the epic confrontations that are sure to follow in the Wano Country Arc.

In episode 917 of One Piece, titled "The Holyland in Tumult! Emperor of the Sea Blackbeard Cackles!", there is indeed a post-credit scene.

The scene opens with a view of the Holy Land Mariejois, where the Celestial Dragons reside. The atmosphere is tense, filled with a sense of impending chaos. The camera pans to a group of Celestial Dragons, who are visibly agitated and discussing the recent events that have unfolded in the world, particularly the actions of the Yonko and the rising tensions in Wano.

As the conversation continues, the focus shifts to a shadowy figure, who is revealed to be Blackbeard, also known as Marshall D. Teach. He is seen laughing maniacally, his expression a mix of amusement and malice. His laughter echoes ominously, suggesting that he is reveling in the turmoil and chaos that is spreading across the seas.

The scene captures Blackbeard's cunning nature and his delight in the disorder that others face, hinting at his ambitions and the potential for future conflict. The camera zooms in on his face, showcasing his sinister grin, before the screen fades to black, leaving viewers with a sense of foreboding about his next moves and the implications for the Straw Hat Pirates and their allies.

This post-credit scene effectively sets the stage for the escalating tensions in the world of One Piece, emphasizing Blackbeard's role as a significant antagonist and the unpredictable nature of the ongoing saga.

In episode 917, Blackbeard is depicted as a cunning and manipulative figure, reveling in the chaos of the Holyland. His laughter echoes ominously, showcasing his delight in the turmoil surrounding the world government and the implications of the ongoing conflict. He is shown to be aware of the shifting power dynamics and seems to relish the opportunity to exploit them.

The Holyland is portrayed as a place of great tension and unrest, with the World Nobles in a state of panic due to the upheaval caused by the events in Wano. The visuals emphasize the stark contrast between the opulence of the Holyland and the chaos that is brewing, highlighting the fragility of their power and the looming threat posed by the Yonko.

The World Nobles are shown to be in a state of fear and confusion, reacting with panic to the news of the upheaval in Wano. Their privileged lives are threatened, and their emotional states range from anger to desperation as they realize that their control over the world is being challenged.

The episode hints at the competitive and treacherous nature of the relationships among the Yonko, particularly through Blackbeard's dialogue and demeanor. His cackling laughter suggests a sense of superiority and confidence, as he seems to be plotting his next move while others are distracted by the chaos in Wano.

In this episode, the turmoil in Wano is referenced through discussions among the World Nobles and the implications of the Straw Hat Pirates' actions. The episode captures the tension of the ongoing battles and the potential for a larger conflict that could involve the Yonko, setting the stage for future confrontations.

In "One Piece" Season 21, Episode 917, titled "The Holyland in Tumult! Emperor of the Sea Blackbeard Cackles!", there are several elements that may be considered objectionable or upsetting for children or sensitive viewers:

1. Violence: The episode features scenes of conflict and battles, which are common in the series. Characters may be shown in perilous situations, and there are depictions of fighting that could be intense for younger viewers.

2. Dark Themes: The episode touches on themes of power struggles and the consequences of ambition, which may be complex and unsettling for some children.

3. Character Threats: The character Blackbeard, known for his ruthless nature, displays menacing behavior and makes threats that could be frightening.

4. Emotional Turmoil: Characters experience moments of distress and anxiety, which may resonate with sensitive viewers and evoke feelings of sadness or fear.

5. Mature Humor: Some humor in the series can be suggestive or dark, which might not be suitable for all audiences.

While "One Piece" is generally aimed at a younger audience, these elements may require parental guidance for younger children or those who are particularly sensitive to such themes.