Yamamoto Luffy and Koyama Nami, two students who have bonded over their One Piece-esque names, meet Usopp, a mega fan of the series. Assuming everyone loves the manga as much as he does, he forcibly recruits them to his newfound "Pirate Club", naming Luffy as its "captain".

Luffy, Nami, and Usopp visit a zoo. When a lion escapes its enclosure, Usopp uses it to help Luffy overcome his fear of animals, knocking the animal unconscious and saving the other visitors.

After the Pirate Club takes an anatomical model from the Biology Club to create Brook, they are challenged to a Davy Back Fight in an attempt to reclaim him.

A series of short stories about the Pirate Club.

Usopp uses a "Buku Buku no Mi" device to send Nami, Tsuchi, and Toriko into the One Piece manga.