In Episode 3 of One Piece, titled "Morgan vs. Luffy! Who’s the Mysterious Pretty Girl?" the story picks up with Luffy and his newly recruited crewmate, Roronoa Zoro, as they face off against the corrupt Marine Captain Morgan.
The episode begins with Luffy and Zoro standing together after Zoro has agreed to join Luffy's crew. Koby, who has been inspired by Luffy’s determination, decides to help them fight against the corrupt Marines. Captain Morgan, a tyrannical leader who rules the Marine base with an iron fist, becomes aware of the commotion caused by Luffy and Zoro and prepares to confront them.
As Luffy and Zoro head toward the Marine base, they are met by Helmeppo, Captain Morgan's cowardly and arrogant son. Helmeppo tries to threaten them, but Luffy easily takes him down, displaying his unique rubber powers once again. Luffy's carefree attitude contrasts sharply with Zoro's more serious demeanor, but their partnership quickly proves effective.
Inside the Marine base, Captain Morgan, with his massive axe for an arm, orders his soldiers to attack Luffy and Zoro. The two effortlessly fend off the Marines, with Zoro showcasing his incredible swordsmanship. Zoro wields three swords in his signature Three-Sword Style, slicing through the enemy with precision and skill.
As the battle intensifies, Captain Morgan himself steps forward to face Luffy and Zoro. Despite Morgan's fearsome appearance and strength, Luffy shows no fear. The fight between Luffy and Morgan is brief but intense, with Luffy using his Gomu Gomu no Pistol attack to land a powerful punch, knocking Morgan out cold.
With Captain Morgan defeated, the Marines, who had been oppressed under his rule, are left in shock and disbelief. Koby takes this opportunity to stand up and declare his desire to join the Marines, inspired by Luffy's bravery and determination. Although the Marines initially hesitate because of Koby's association with Luffy, they eventually agree to take him in, recognizing his courage.
Meanwhile, Luffy and Zoro prepare to leave the island, but not before Luffy makes a lasting impression by freeing the town from Morgan's tyranny. The townspeople, grateful for their liberation, offer their thanks, but Luffy and Zoro are already focused on their next adventure.
Before they leave, a mysterious young woman with orange hair is shown sneaking into the Marine base. She is seen searching for something, hinting at her own agenda and adding intrigue to the story. This character is soon revealed to be Nami, a skilled thief and navigator who will play a crucial role in Luffy's journey.
The episode ends with Luffy and Zoro setting sail, eager to continue their adventure and find more crewmates. Luffy, ever optimistic, declares that they will soon find the One Piece and become the greatest pirate crew in the world.
Conclusion
Episode 3 is a pivotal moment in One Piece, as it solidifies Zoro's commitment to Luffy and introduces Nami, who will soon become a key member of the Straw Hat Pirates. The episode is filled with action, humor, and the beginning of the deep bond between Luffy and his crew.