Having "rescued"(?) a Fox mink named Ben, the Lucky Puff crew find themselves face-to-face with the greatest temptation on The Grand Line: a gacha game. Using the coins given to him by Hideo, Amon and the crew test their fortunes at some new items that are sure to help them on their adventures on the high seas.

However, their purchasing is concluded just when an unconscious stranger in a small row boat knocks against the port side of Ben's Sale Boat (see what I did there?) Who is this peculiar man? Where does he come from? And why is he calling Cillian "Anteater"?

A new mystery begins as The Grand Line continues!