Sungjong, a young fine boy who sets foot on the Blood Moon island. He wants to start over and live a fresh and peaceful life, but when it was found out that he has the one and only nautical chart of the Cerulean, every thieves and pirates have kept coming for him.

Myungsoo, a young pirate from the Kraken Isle, who also is the captain of his own ship, has heard of this boy, so he decides to stay on the Blood Moon Island to search for him and successfully get the rare nautical chart before anyone else does.

What will happen when captain Myungsoo finally finds Sungjong, who is currently cornered by a bunch of other pirates? Is he going to help him? Or he's gonna let the others take the chart away and just make an irresistable deal with them later on?