Kid grew up peacefully among animals on a small Caribbean island. His life transformed when his dying foster father revealed Kid's true parentage: he was the son of Captain Morgan, the pirate ruler of the seven seas. Kid journeyed to find his father but discovered Morgan had perished.

Following Morgan's death, pirates like the notorious Tiger Hook fought to dominate the seas. Kid claimed his father's legacy aboard the ship Hurricane, becoming pirate king to protect the waters. He was accompanied by a girl named Pearl and an elder called Clap, forming his crew. Together, they confronted challenges across the seven seas and encountered the unknown.