Summary:
Despite her age, Zenny decides to follow her dream of becoming a pirate. He helps the Straw Hat Pirates out of trouble with the marines and then they part ways.
Zenny spots a fleet of naval ships and realizes that a trap has been set for the Straw Hats. Zenny decides to “float” the mountain using her ship to help them. Zenny sees that he is now at sea and declares that he has officially become a pirate.
While the marines are distracted, the Straw Hats head for the Going Merry. Marine sees this and asks Minchey to inform their captain that the pirates are up to something. Minchey shoots him and reminds him that they can’t tell their captain what’s going on if they want to steal the old man’s treasure.
Realizing that the chief petty officer is paying off his men to continue his side projects, Zenny taunts him. She urges him that if he wanted his treasure, he would have to take it himself. Zenny then sends her goats to attack the Marine ship and chaos ensues.
The chaos proves to be too much for Zenny and he experiences chest pains. Minchey kicks him and grills him about the location of the treasure. Zenny admits that she is broke and has no treasure. Minchey doesn’t believe him and decides to just search the entire island instead of waiting for the old man to tell him where the treasure is.
Before Minchey can kill Zenny, Robin throws a counter at Minchey and the goats trample him. The Going Merry reaches Zenny and Chopper rushes to give him medical attention. With Minchey captured and everyone safe, Nami asks Zenny about his treasure. Zenny reveals that he traded all his treasure for cash. He was attacked by pirates and ended up abandoned on an island. When he came, the goats ate all his money and left him nothing, so he considers the goats his treasure.
They then send Minchey flying back to the naval fleet. Moore strips him of his rank and calls him a disgrace. He then calls Luffy and tells him that he has no interest in capturing Zenny. And that while he wants to capture the Straw Hats, he also wants to pay a debt of honor for betraying a disgraced member of his fleet. It allows them to choose where to fight. Luffy accepts and heads out to meet the naval fleet. He then inadvertently leads the fleet into a misty reef area that causes the naval ships to sink.
Zenny returns to the island to repair his ship and decides to set sail after repairs. The Straw Hats have prepared Zenny’s supplies and medicine so he will be able to set out when he is ready. Zenny decides that his age will not stop him from becoming a pirate and that he will go on adventures while he can.
As the crew worries about him, Luffy assures them that the old timer will be fine, and Zoro agrees, thinking that while Zenny had a weak heart, he had plenty of courage to fix it.