The protagonist, Lin Fan, falls from the sky and lands in Foosha Village, where Luffy, Sabo, and Ace are chatting about their dreams by the edge of a cliff. They come to his rescue! He is utterly shocked because he knows the story of Pirate King inside out and knows that two of them will become renowned pirates in the future.
Luffy is extremely curious about this person who fell from the sky.
He invites Lin Fan to join their adventures. The four of them form a small crew and set off on a journey full of danger and excitement.
Along the way, they face all kinds of powerful foes, but thanks to his knowledge of the story, the protagonist always manages to come up with a way to help Luffy, Sabo, and Ace escape danger.
However, the protagonist's identity gradually arouses suspicion among certain people, who begin secretly investigating his true origins. To protect his secret, he has no choice but to engage them in a battle of wits.
