The infamous Portgas D. Ace's departure from Dawn Island marks the beginning of his pirate adventure, and he immediately finds himself deserted on an uninhabited, desolate island. There, he meets a mysterious man, who quickly becomes drawn to Ace's personality and befriends him. Aiming to get themselves off the island, the duo decides to work together to build a boat.

However, due to a lack of food on the isle, the pair only have so much time to finish making their craft, causing tension to arise between the two. Nonetheless, the appearance of a special fruit may give them the hope needed to escape the island—because if they succeed, they vow to sail the Grand Line together.

Included one-shots: Volume 1: Roronoa Zoro, Umi ni Chiru (Zolo Overboard) Volume 2: Nami vs. Kalifa