Ash, Misty, and Brock arrive in Pewter City, where Ash is eager to challenge the Pewter City Gym Leader, Brock, for his first Gym Badge. As they walk through the city, Ash is filled with excitement and determination, envisioning his victory. Misty, however, is skeptical about Ash's chances, knowing that Brock is a skilled trainer. They soon find the Pewter Gym, a large stone building that stands out in the city.

Inside the gym, Ash is confronted by Brock, who is busy training his Rock-type Pokémon. Brock is initially dismissive of Ash, believing he is not ready for a Gym battle. Ash insists on challenging him, and Brock agrees, but only after Ash proves his worth by showing his skills as a trainer. This sets the stage for a battle that will test Ash's abilities and determination.

The battle begins, and Ash sends out his Pikachu to face Brock's Geodude. Brock's Geodude, a Rock-type Pokémon, has a significant advantage over Pikachu, who is an Electric-type. The battle starts with Geodude using Tackle, which hits Pikachu hard. Ash, feeling the pressure, encourages Pikachu to use Thunder Shock. However, the attack is ineffective against Geodude, who withstands the hit and retaliates with another Tackle, knocking Pikachu out.

Realizing he needs a different strategy, Ash recalls Pikachu and sends out his Butterfree. Brock, confident in his Pokémon's strength, continues to use Geodude. Butterfree uses Sleep Powder, successfully putting Geodude to sleep. Ash seizes the opportunity and commands Butterfree to use Confusion, which deals significant damage to the sleeping Geodude. However, Brock quickly recalls Geodude and sends out his Onix, a much more formidable opponent.

The battle intensifies as Ash faces Brock's Onix. Ash's Butterfree is at a disadvantage against the massive Rock/Ground-type Pokémon. Onix uses Rock Throw, which sends Butterfree crashing to the ground. Ash, desperate to win, recalls Butterfree and sends out his Charmander. Charmander, though smaller, is determined to fight. Ash instructs Charmander to use Ember, but Onix's size and strength make it difficult for Charmander to land a hit.

Brock, seeing Ash's struggle, encourages Onix to use its powerful moves. Onix retaliates with another Rock Throw, which sends Charmander flying. Ash, feeling the weight of the battle, refuses to give up. He motivates Charmander to keep fighting, and they come up with a new plan. Ash instructs Charmander to dodge Onix's attacks and wait for the right moment to strike.

As the battle continues, Ash's strategy begins to pay off. Charmander manages to evade several of Onix's attacks and finally gets a clear shot. Ash commands Charmander to use Ember again, and this time, the attack hits Onix directly, causing significant damage. Brock, surprised by Ash's determination and strategy, realizes that Ash is a worthy opponent.

The battle reaches its climax as both trainers push their Pokémon to their limits. Onix, weakened but still standing, prepares for one final attack. Ash, sensing the moment, tells Charmander to use a powerful Flamethrower. The attack connects, and Onix is finally defeated, collapsing to the ground. Brock, impressed by Ash's skills and growth as a trainer, concedes the battle and awards Ash the Boulder Badge.

With the battle won, Ash feels a surge of pride and accomplishment. Misty congratulates him, and Brock, now impressed, offers to join them on their journey. Ash, Misty, and Brock leave Pewter City together, ready for new adventures, with Ash's first Gym Badge in hand, symbolizing his progress as a Pokémon Trainer.

In the ending of "Showdown in Pewter City," Ash Ketchum faces off against Brock, the Pewter City Gym Leader, in a Pokémon battle. After a fierce competition, Ash ultimately wins the battle, earning his first Gym Badge. Brock, impressed by Ash's determination and skill, decides to join Ash on his journey. The episode concludes with Ash, Misty, and Brock setting off together, ready for new adventures.

As the episode nears its conclusion, the scene shifts to the Pewter City Gym, where Ash stands determinedly across from Brock, who is confident and composed. The atmosphere is charged with anticipation as the battle begins. Ash calls upon his trusty Pikachu, while Brock selects his formidable Onix, a massive Rock/Ground-type Pokémon. The tension is palpable as the two trainers prepare to showcase their skills.

The battle commences with Brock commanding Onix to use its powerful Tackle attack. Ash, feeling the weight of the moment, instructs Pikachu to dodge and counter with a Thunderbolt. The electric attack strikes Onix, but the rock-type Pokémon withstands the hit, showcasing its resilience. Ash's determination shines through as he strategizes, realizing that Pikachu's speed and agility are key to overcoming Brock's powerful Pokémon.

As the battle progresses, Ash's tactics evolve. He encourages Pikachu to use its agility to outmaneuver Onix, darting around the gym with a newfound confidence. The audience watches in awe as Pikachu executes a series of quick attacks, landing hits on Onix. Brock, impressed by Ash's creativity, counters with a series of commands, but Ash's bond with Pikachu proves to be a significant advantage.

In a climactic moment, Ash calls for a final Thunderbolt, pouring all his energy and belief into the attack. The electric surge hits Onix with full force, and the massive Pokémon finally succumbs, collapsing to the ground. The gym erupts in cheers as Ash is declared the winner. Overwhelmed with joy, Ash celebrates his hard-earned victory, realizing that his journey is just beginning.

Brock, acknowledging Ash's skill and determination, approaches him with respect. He expresses admiration for Ash's growth as a trainer and offers him the Boulder Badge, a symbol of their battle and Ash's achievement. This moment is significant for both characters; Ash feels a sense of accomplishment, while Brock recognizes the potential in Ash as a trainer.

As the episode wraps up, Brock makes a pivotal decision. Inspired by Ash's passion for Pokémon training, he chooses to leave Pewter City and join Ash and Misty on their journey. This decision marks a turning point for Brock, who has long been tied to his responsibilities at the gym. The trio sets off together, united by their shared dreams and aspirations, ready to face the challenges that lie ahead.

The episode concludes with Ash, Misty, and Brock walking down the road, filled with excitement for their next adventure. Each character is left with a sense of purpose: Ash with his first Gym Badge, Misty with a renewed sense of camaraderie, and Brock with the hope of discovering his own path alongside his new friends. The screen fades as they venture into the unknown, symbolizing the beginning of their collective journey in the world of Pokémon.

In the episode "Showdown in Pewter City" from the first season of Pokémon, there is no post-credit scene. The episode concludes with Ash and his friends celebrating their victory and reflecting on their journey, but it does not include any additional scenes or content after the credits roll. The focus remains on the main storyline and the characters' development throughout the episode.

Brock is initially portrayed as a serious and dedicated Gym Leader, focused on his duties and the care of his younger siblings. However, as the episode progresses, his character reveals a softer side, especially when he interacts with Ash and Misty. He shows a desire to travel and become a Pokémon Breeder, which highlights his internal conflict between his responsibilities at home and his dreams.

The episode highlights the bond between Ash and his Pokémon, particularly Pikachu. Throughout the episode, Ash shows a deep trust in Pikachu's abilities, often relying on its instincts during battles. Their relationship is characterized by mutual respect and encouragement, as Ash motivates Pikachu to push through tough moments, showcasing the emotional connection that drives their teamwork.

Upon arriving in Pewter City, Ash is eager to earn his first Gym Badge. However, he quickly learns that the Pewter City Gym is run by Brock, who is not only a skilled trainer but also has a deep commitment to his family and responsibilities. Ash faces the challenge of proving himself against Brock's Rock-type Pokémon, which are particularly strong against his own Pokémon.

In his battle against Brock, Ash initially struggles due to the type disadvantage of his Pokémon. However, he learns to adapt his strategy by using Pikachu's speed and agility to dodge Brock's powerful Rock-type attacks. Ash's determination and quick thinking allow him to come up with creative tactics, such as using the environment to his advantage, which ultimately leads to a more dynamic battle.

Misty plays a crucial role in Ash's journey during this episode as both a companion and a voice of reason. She encourages Ash to think strategically about his battle with Brock and provides support when he feels discouraged. Additionally, her own aspirations as a Water-type trainer add depth to the dynamic between the characters, showcasing her determination and contrasting with Ash's more impulsive nature.

The episode "Showdown in Pewter City" from the Pokémon series is generally considered family-friendly, but there are a few elements that might be slightly concerning for very young children or sensitive viewers.

1. Rivalry and Conflict: The episode features a competitive atmosphere, particularly between Ash and Brock, which may include moments of tension and disagreement. This rivalry can be intense but is ultimately resolved positively.

2. Disappointment and Frustration: Ash experiences moments of disappointment, especially when he faces challenges in his quest to earn a Gym Badge. His emotional responses may resonate with children who have faced similar feelings.

3. Intense Pokémon Battles: The Pokémon battles can be visually intense, with dramatic moments that might be a bit overwhelming for very young viewers. However, they are not violent in nature.

4. Character Struggles: Brock's backstory and motivations may touch on themes of aspiration and personal goals, which could evoke feelings of empathy or concern for his character.

Overall, while there are some emotional and competitive elements, the episode maintains a light-hearted tone typical of the series, focusing on friendship, perseverance, and adventure.