In the first episode of Pokémon: Sun & Moon, Ash Ketchum arrives in the Alola region, excited to start a new adventure. He is greeted by Professor Kukui, who introduces him to the unique culture and Pokémon of Alola. Ash learns about the island challenge, a series of trials that trainers undertake to become stronger. He also meets his new classmates at the Pokémon School: Lillie, Mallow, Lana, and Kiawe. Each character has their own distinct personality and background, setting the stage for their interactions throughout the series.

As Ash settles into his new life, he encounters a wild Rowlet, a Grass/Flying-type Pokémon. After a brief chase, Ash successfully catches Rowlet, adding it to his team. This moment is filled with excitement and determination, showcasing Ash's growth as a trainer. He also begins to bond with his classmates, who each have their own aspirations and challenges. Lillie, in particular, struggles with her fear of touching Pokémon, stemming from a traumatic experience in her past.

In subsequent episodes, Ash participates in various trials and challenges, including a battle against Team Skull, a group of troublemakers in Alola. Team Skull attempts to steal Pokémon, leading to a confrontation where Ash and his friends work together to thwart their plans. This battle highlights the camaraderie among the group and their commitment to protecting Pokémon.

As the series progresses, Ash faces off against the island Kahunas, powerful trainers who oversee the trials. He battles Kahuna Hala, who uses a powerful Machamp. The battle is intense, with Ash utilizing his strategy and the strengths of his Pokémon. After a hard-fought match, Ash emerges victorious, earning his first Z-Crystal, which allows him to perform Z-Moves, a new battle mechanic in the Alola region.

Throughout the season, Ash and his friends explore the Alola region, encountering various Pokémon and challenges. They participate in school activities, including a cooking competition where Mallow shines with her culinary skills. The group also faces personal challenges, such as Lillie's struggle with her fear of Pokémon and Kiawe's determination to prove himself as a strong trainer.

A significant plot point occurs when Ash and his friends discover the existence of the Ultra Beasts, mysterious and powerful Pokémon from another dimension. They encounter UB-01, a creature that resembles a jellyfish, and must work together to understand its intentions. This encounter leads to a deeper exploration of the Ultra Wormholes and the potential dangers they pose to the Alola region.

As the season progresses, Ash participates in the Alola League, a tournament that showcases the skills of trainers from across the region. The competition is fierce, with Ash facing off against strong opponents, including his classmates. Each battle is filled with tension and excitement, showcasing Ash's growth as a trainer and his bond with his Pokémon.

In the climax of the season, Ash faces off against Gladion, a rival trainer with a strong connection to the Ultra Beasts. Their battle is intense, with both trainers pushing their Pokémon to their limits. Ash ultimately emerges victorious, solidifying his status as a top trainer in the Alola region.

The season concludes with Ash reflecting on his journey in Alola, the friendships he has formed, and the lessons he has learned. He prepares to leave the region, but not before promising to return and continue his adventures with his friends. The emotional farewell highlights the bonds that have been forged throughout the season, leaving a lasting impact on both Ash and his classmates.

In the ending of Pokémon: Sun & Moon, Ash and his friends face off against Team Skull and the Ultra Beasts. After a series of intense battles, Ash and his Pokémon, particularly his partner Pikachu, demonstrate their growth and strength. The climax culminates in a showdown against the Ultra Beast Nihilego, where Ash shows his determination and leadership. Ultimately, the group successfully protects their home and the Alola region from the threats posed by Team Skull and the Ultra Beasts. The season concludes with Ash preparing to leave Alola, reflecting on his journey and the friendships he has formed.

As the final episodes unfold, the scene opens with Ash and his friends--Mallow, Lillie, Kiawe, and Sophocles--gathered at the Pokémon School. They are filled with a mix of excitement and apprehension as they prepare for the upcoming battle against Team Skull, who have been causing chaos in the Alola region. The atmosphere is charged with anticipation, and Ash's determination shines through as he rallies his friends, reminding them of the strength they have gained together.

The scene shifts to the confrontation with Team Skull, where the villainous group, led by Guzma, is wreaking havoc. Ash and his friends spring into action, each showcasing their Pokémon's abilities. Mallow's Tsareena, Kiawe's Turtonator, and Lillie's Snowy all play crucial roles in the battle. The animation captures the intensity of the fight, with vibrant colors and dynamic movements as Pokémon unleash their signature moves. Ash's leadership is evident as he coordinates their efforts, encouraging his friends to work together.

As the battle escalates, the Ultra Beast Nihilego appears, creating a sense of urgency and danger. The group realizes that they must not only defeat Team Skull but also find a way to deal with this powerful creature. The tension builds as Ash and Pikachu step forward to confront Nihilego. The bond between Ash and Pikachu is palpable, showcasing their unwavering trust in each other. Ash's eyes reflect his determination, and he calls upon Pikachu to use Thunderbolt, a move that has become iconic in their journey together.

In a climactic moment, Ash's strategy and the teamwork of his friends lead to a successful defeat of Nihilego. The Ultra Beast is subdued, and the threat to Alola is neutralized. The victory is bittersweet, as the group reflects on the challenges they faced and the growth they experienced throughout their journey. Each character has developed in their own way--Mallow has become more confident, Lillie has embraced her bond with Pokémon, and Kiawe has shown his strength as a trainer.

As the dust settles, the scene transitions to a quieter moment where Ash stands on a cliff overlooking the ocean, contemplating his time in Alola. The sun sets in the background, casting a warm glow over the landscape. Ash's expression is a mix of nostalgia and hope as he thinks about the friendships he has forged and the lessons he has learned. His friends join him, and they share a heartfelt moment, promising to stay connected despite the distance that may come.

The final scene shows Ash preparing to leave Alola, packing his belongings and saying goodbye to his friends. Each character expresses their gratitude and admiration for one another, solidifying the bonds they have created. As Ash boards the ship, he looks back at the island, a smile on his face, knowing that this chapter of his journey has come to an end, but the memories will last forever.

In the closing moments, the screen fades to black, leaving viewers with a sense of closure and the understanding that Ash's adventures will continue, but the experiences in Alola have shaped him into a stronger trainer and a better friend. The season ends on a hopeful note, emphasizing themes of friendship, growth, and the importance of teamwork.

In Pokémon Season 20, titled "Sun & Moon," there is indeed a post-credit scene that adds a light-hearted touch to the episode. After the credits roll, viewers are treated to a brief moment featuring Team Rocket--Jessie, James, and Meowth.

In this scene, the trio is seen in their usual comedic fashion, attempting to execute one of their schemes. They are in a somewhat chaotic environment, with various gadgets and contraptions around them, showcasing their ongoing ambition to capture Pikachu. As they bicker and argue over their plans, their antics lead to a humorous mishap, resulting in a comical explosion or a slapstick moment that leaves them in a disheveled state.

This post-credit scene encapsulates the light-hearted spirit of the series, providing a fun and entertaining conclusion that contrasts with the more serious themes explored in the main episodes. It reinforces the ongoing rivalry between Team Rocket and Ash, while also highlighting the trio's enduring friendship and their relentless, albeit often futile, pursuit of their goals.

In the Alola League, Ash faces several challenges that test his skills and determination. He competes against strong trainers like Gladion, who has a powerful team including his signature Pokémon, Silvally. The battles are intense, showcasing Ash's growth as a trainer, as he utilizes his Alolan Pokémon effectively. The emotional stakes are high, especially when Ash confronts his past experiences and the pressure of representing his friends and his journey.

Throughout the Sun & Moon season, Ash's bond with Pikachu deepens as they face new challenges together in the Alola region. They experience moments of joy, such as participating in the Pokémon School activities, and moments of tension during battles. Pikachu's trust in Ash is evident as they work together to overcome obstacles, and their friendship is highlighted during critical battles, showcasing their unbreakable bond.

Team Skull serves as a recurring antagonistic force in the Sun & Moon series. They are portrayed as a group of misfits who disrupt the peace in Alola. Their leader, Guzma, is particularly notable for his confrontational attitude and his desire to challenge strong trainers. Team Skull's antics provide comic relief but also present real threats to Ash and his friends, culminating in significant battles that test the protagonists' resolve.

Litten's character arc is one of the most poignant in the Sun & Moon series. Initially, Litten is portrayed as a fierce and independent Pokémon, reluctant to trust humans due to past trauma. As Ash befriends Litten and helps it confront its fears, Litten gradually opens up, showcasing its loyalty and strength. This transformation is highlighted during battles, where Litten evolves into Torracat, symbolizing its growth and newfound trust in Ash.

The Ultra Beasts play a crucial role in the Sun & Moon narrative, introducing a new layer of mystery and adventure. These enigmatic creatures, such as Nihilego and Buzzwole, challenge the trainers of Alola and prompt Ash and his friends to investigate their origins. The encounters with Ultra Beasts not only test the trainers' skills but also explore themes of friendship and understanding between different species, culminating in significant battles that impact the characters' development.

"Pokémon: Sun & Moon" is generally considered family-friendly, aimed at a younger audience. However, there are a few scenes and aspects that might be potentially objectionable or upsetting for children or sensitive viewers:

1. Mild Conflict and Rivalry: There are moments of rivalry between characters, which can lead to emotional tension. Some viewers might find the competitive nature of the characters a bit intense.

2. Loss and Disappointment: Characters experience loss in battles or face challenges that lead to feelings of disappointment. These moments can evoke sadness or frustration.

3. Scary Pokémon Encounters: Certain Pokémon are depicted in a way that may be perceived as intimidating or frightening, especially when they display aggressive behavior.

4. Emotional Struggles: Characters sometimes deal with personal insecurities or fears, which can lead to moments of vulnerability that might resonate deeply with sensitive viewers.

5. Mild Humor: Some humor may involve slapstick or mild embarrassment, which could be uncomfortable for some children.

Overall, while the series contains these elements, they are presented in a light-hearted manner typical of the Pokémon franchise, making it suitable for most children.