Mizo, the first navigator of the Straw Hats, went out to sea alone after a quarrel with Luffy but almost encountered a shipwreck. Fortunately, he met Ivankov, but the monster king performed a major gender transformation on him and named him "Nami". The navigator who became Nami was very upset about becoming a woman and felt that he did not have the confidence to lead the Sunny. However, at the same time, he was secretly happy because he had a beautiful appearance and body that made it easier to extort money from the crew...
When the Straw Hats entered Dressrosa, they discovered that Brooke was missing and learned that the Empress of Nine Snakes was banned. However, they encountered the obstruction of Luo, Monet, Caesar, Baby-5 and others intentionally or unintentionally. How should they take action...?
The crazy Luffy, the innocent and cool Zoro, Sanji who loves beautiful women like life... How will they react to Nami becoming a woman?