The episode begins with a dramatic scene in Dressrosa, where the Straw Hat Pirates are engaged in a fierce battle against the Donquixote Pirates. The focus shifts to Pica, one of Doflamingo's top executives, who is known for his ability to manipulate stone. Pica's massive stone form rises from the ground, towering over the battlefield, and he begins to move towards the Straw Hats, creating a sense of impending doom.

As Pica rises, the Straw Hats and their allies react with shock and determination. Zoro, who is eager to confront Pica, expresses his desire to take him down. Meanwhile, the other members of the crew, including Franky and Robin, prepare for the confrontation, strategizing on how to deal with the enormous threat posed by Pica. The tension builds as Pica's massive stone body looms over them, and the ground shakes with his movements.

Pica begins to attack, using his stone manipulation to create large stone arms that swing down towards the Straw Hats. Zoro quickly dodges the first attack, showcasing his agility and combat skills. He then counters with his sword, attempting to cut through Pica's stone form. However, Pica's body is resilient, and Zoro realizes that he needs to find a way to break through Pica's defenses.

The scene shifts to the citizens of Dressrosa, who are watching the battle unfold. They express their fear and admiration for the Straw Hats, hoping that they can defeat Pica and bring peace to their land. The emotional stakes rise as the citizens remember the oppression they have faced under Doflamingo's rule, and they rally behind the Straw Hats, cheering them on.

Back in the battle, Zoro continues to clash with Pica, using his sword techniques to try and find a weak point. Pica, however, is relentless, and he retaliates with powerful stone attacks that threaten to crush Zoro. The fight escalates, with Zoro using his Haki to enhance his attacks, but Pica's size and strength make it a challenging battle.

As the fight progresses, Zoro realizes that he cannot defeat Pica alone. He calls out to his crewmates for assistance, and Franky responds by launching a barrage of attacks from his own arsenal. Franky uses his technology to create distractions, allowing Zoro to focus on finding a way to defeat Pica. The teamwork between the Straw Hats becomes evident as they coordinate their efforts against the formidable foe.

Pica, frustrated by the combined efforts of the Straw Hats, begins to unleash more powerful attacks, causing destruction in the surrounding area. The ground shakes, and debris flies as he attempts to crush Zoro and Franky. The stakes are raised as the battle threatens to spill over into the nearby buildings, endangering the citizens of Dressrosa.

In a pivotal moment, Zoro manages to land a significant blow on Pica, using his sword to cut through a portion of the stone. This moment of success boosts Zoro's confidence, and he pushes forward with renewed determination. He realizes that he must find Pica's true form, which is hidden within the stone, to defeat him once and for all.

The episode culminates in a climactic showdown as Zoro, with the support of Franky and the other Straw Hats, prepares to confront Pica's true form. The tension is palpable as they strategize their next moves, knowing that the fate of Dressrosa hangs in the balance. The episode ends on a cliffhanger, leaving viewers eager to see how the battle will unfold in the next installment.

In episode 669, Pica showcases his unique ability to manipulate stone, allowing him to transform the landscape around him into a massive moving castle. His powers enable him to merge with the stone structures, making him a formidable opponent as he rises up to confront the Straw Hat Pirates.

Zoro is initially taken aback by Pica's transformation into a giant stone figure. However, he quickly regains his composure, determined to face the challenge head-on. Zoro's internal motivation is fueled by his desire to protect his friends and prove his strength against powerful foes.

The moving castle serves as both a weapon and a shield for Pica, complicating the battle for the Straw Hat Pirates. It symbolizes the overwhelming power of the Donquixote Family and the stakes of the conflict in Dressrosa, as the castle's mobility allows Pica to attack from various angles, making it difficult for the Straw Hats to strategize.

The other Straw Hat members, particularly Franky and Robin, express concern over Pica's immense size and power. They strategize on how to assist Zoro in the fight, showcasing their teamwork and determination to support one another against formidable enemies.

During his confrontation with Pica, Zoro exhibits a mix of determination and focus. He is resolute in his goal to defeat Pica, driven by a sense of duty to his crew and a desire to overcome the challenges posed by the Donquixote Family. His internal monologue reflects his commitment to becoming stronger and protecting his friends.

In "One Piece" Season 16, Episode 669, titled "A Moving Castle! The Top Executive Pica Rises up!", there are several elements that may be considered objectionable or upsetting for children or sensitive viewers:

1. Violence: The episode features intense battles and confrontations, including characters using their powers to attack one another, which may be graphic for younger viewers.

2. Threats and Intimidation: Characters display aggressive behavior and make threats, which could be unsettling for some children.

3. Emotional Struggles: There are moments of tension and fear among characters, showcasing their internal struggles and the stakes of their battles, which may evoke anxiety.

4. Dark Themes: The overarching themes of conflict, betrayal, and the fight against oppression may be heavy for younger audiences to fully grasp.

5. Character Transformations: Pica's ability to manipulate stone and his imposing presence can be visually intimidating, potentially causing fear in sensitive viewers.

While the show 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.