It all began with finding a strange stone in a cave while on exploration which Ace could read...And that led to his memories being shown to the Whitebeards. Set in the same universe as Saving Ace Together but NOT the sequel but in between the sequel and Saving Ace Together. Watching Ace's memories from Rouge to Marineford and beyond.

The Straw Hats run into an island that manufactures sea prism stone, & who use mysterious God powers as well as Devil Fruit powers. Trying to prove they don't deserve execution, they fight a nameless demon to defend the kingdom. Zoro gets (unwittingly) engaged to a princess and looks for a way to escape getting married. Takes place between Alabasta & Skypiea. - mild language.