Fire Fist Ace of the Whitebeard Pirates rescued a seriously injured mermaid from a human trafficker during a mission, and then:
The concubine of the Dragon King who ran away from home: Sao Nian, I think you will look like an emperor, and you will definitely be able to rule the world in the future! I have made a contract with you. When you become king, it will be the time when I will become a god!
Ace: Sorry, my wish is for Daddy Whitebeard to become the Pirate King! And fragile mermaids are not suitable to stay in the pirate group. I just asked someone to take you back to Mermaid Island...
Don't read the silly dialogue above! Shou's character is not like this∠(:3∠)_Believe me~
Seriously, this is a story about a half-dragon, half-mermaid prince who doesn't know the plot but has countless plug-ins. He travels into the world of One Piece, accidentally signs a life contract with Ace, and strives to become the Dragon God.